Big expense fuel is a frequent complaint of drivers about their car.
The car, at first glance, good condition and the engine size is modest, but why such an unreasonably high fuel consumption ?!

This frequently asked question many customers of car services, including ours. Sometimes even an experienced specialist cannot unequivocally answer this question about fuel economy. Here, using our knowledge and experience, we will try to talk about the causes of this important problem for all of us.

Attention! Help for the diagnostician.

Reference books and other technical literature are offered to your attention.
You will have useful information with which you can determine the causes of malfunctions and errors in the operation of components and assemblies of your car.
Content in Russian.
Format - e-books.

1. Fault in electronic system engine control.
Among the many reasons increased consumption fuel on modern cars, a malfunction of the engine management system comes to one of the first places. This is, firstly, the incorrect operation of sensors that transmit to electronic engine control unit (ECU) the main parameters of the operation of engine components.

The cause of increased fuel consumption is also affected by malfunctions of components that are not basic and necessary for the operation of the engine.
For example, the system EGR (Exhaust Gas Recirculation), which serves to reduce the emission of harmful components of fuel combustion. In the event of a malfunction EGR valve(jammed open) at idle, the exhaust gases break into the intake manifold and sharply upset the balance air-fuel mixture. The ECU in such cases is not able to control the operation of the engine. With this malfunction, fuel consumption can increase markedly, especially in urban conditions, when the proportion of engine operation in idling modes and frequent gas changes is large.
Faults associated with the engine management system, without electronic diagnostics, without scanning sensors and actuators are difficult to eliminate. Finding an engine failure by replacing all of its sensors and accessories is a waste of time and money.

2. Abnormal pressure in the fuel system of the engine.
The engine ECU calculates fuel injection based on a constant setpoint. fuel pressure. At high blood pressure fuel, the balance of the air-fuel mixture is disturbed towards enrichment. The situation in which the fuel pressure can be too high is quite rare, because the set fuel pressure is maintained by simple and reliable pressure regulators. But in this case, the ECU, according to the testimony oxygen sensor Re-enrichment compensates for excess fuel injection by reducing the pulse time on the injectors.
A more serious impact on fuel consumption has a reduced pressure in the fuel system. In this case, the engine power is underestimated, pressing the gas pedal only worsens the situation, acceleration dynamics worsens, the ECU is not able to compensate for the lack of fuel due to even the maximum fuel injection pulse time. In addition, when the throttle is wide open, the vacuum drops during intake manifold- it means that the air flow sensors give an overestimated engine load signal that does not correspond to reality. This leads to a final drop in engine power.
If the car is equipped with an automatic transmission, then the operating time in lower gears increases, the engine runs longer at increased speed(efficiency decreases), hence the high fuel consumption.

3. Faulty engine injectors.
Operated without preventive maintenance, dirty engine injectors are one of the most common causes of increased fuel consumption.
Due to the violation of the shape of the spray jet and the quality of the fuel spray, normal mixture formation is disrupted, as a result of which we have a decrease in efficiency: the engine “troits”, a significant part of the fuel “burns out” uselessly in the exhaust manifold and catalyst of the car, reducing its service life .
With contaminated injectors, the acceleration dynamics of the car deteriorates sharply, the gearshift modes are delayed, the engine runs at high speeds for a long time, and fuel consumption increases.
Conditions are created under which the load on high-voltage parts of engine ignition systems increases: candles, high-voltage wires, ignition coils, electronic distributors, which leads to their damage or a sharp decrease in their useful life.
Our recommendations - periodically do preventive cleaning of injectors, this is one of the important ways to save fuel.

Read about methods of cleaning injectors on the website www.rat-auto.ru
Read more about the consequences of running an engine with dirty injectors.

4. Failure of the catalytic reactor (catalyst).
Burnt and destroyed catalyst - the reason sharp decline engine power and very high fuel consumption.
With high resistance exhaust gases the balance of the air-fuel mixture is sharply disturbed in the direction of re-enrichment, tk. with a small vacuum in the intake manifold, the engine control unit analyzes heavy load and increases the open time of the injectors.
An avalanche-like process occurs - the more the catalyst is "clogged", the richer the mixture, the more the catalyst overheats and collapses.

Reasons for the destruction of the catalyst:

• Use of poor quality gasoline.
• Rarely serviced, dirty engine injectors.
• Old or damaged spark plugs.
• Malfunctions in the engine management system and automatic transmission.

5. Clogged air filter.
Everyone knows this reason, but for some reason, many people forget to replace the air filter in time. With a clogged air filter, we not only get the effect of "air starvation", but, more importantly, the correct operation of the intake air flow sensors (MAP, MAF, etc.) is disrupted.
The ECU erroneously calculates the engine load, respectively, mixture formation occurs incorrectly. Increased fuel consumption is inevitable.

6. Influence of faults automatic transmission.
The automatic transmission torque converter is equipped with a lock-up clutch ( TCC), which is triggered by a signal from the automatic transmission control unit.
In lock mode, rotation speed input shaft automatic transmission is compared with the speed of rotation crankshaft engine. At the same time, there is no slippage in the torque converter, the engine speed decreases, and fuel consumption also decreases.
The absence of the torque converter blocking mode is always an increased fuel consumption with an apparent normal operation of the car, as well as overheating of the automatic transmission.
The electronic control systems of many automatic transmission models, in the event of malfunctions in the torque converter blocking unit, also prohibit the transition to overdrive gear, that is, the most economical gear will be absent in the car.
Modern automatic transmissions with electronic control in case of critical malfunctions go into emergency operation mode ( limp-in), which protects the transmission from further damage. In some models, this mode includes only 2nd gear, in others only 3rd gear.
Some inexperienced drivers, instead of timely diagnosis of automatic transmission, they continue to operate the car in emergency mode, this leads to huge expense fuel.

7. Driving style and fuel economy.
The basic principle of economical driving is to quickly shift to a higher gear and use coasting (coasting).
If your vehicle is equipped with cruise control ( Speed ​​control or cruise control), take a closer look at the algorithm of operation of such systems. This fast acceleration to top gear, deceleration and coasting. If you compare fuel consumption in the "Speed ​​Control" mode and in your own driving style, then some motorists will be the loser.
Some drivers who changed the car from a manual transmission to an automatic did not change their driving style, that is, they continue to "work" with both feet, but under the left foot there is not a clutch pedal, but a brake!
Such drivers certainly complain about increased fuel consumption.

8. Influence of car air conditioners on fuel consumption.
Consider two cases: operation in urban driving and on the highway. In urban mode, where the engine idle time is long, the air conditioner takes part of the engine power to work the compressor. Moreover, than weaker engine, the greater the share of the power take-off goes to the operation of the air conditioner. Usually on idling it is from 5% to 15%.
In the engine operating mode at high speeds and loads (on the highway), the effect of the air conditioner on fuel consumption is hardly noticeable. In these operating modes, the engine power is high and part of the power spent on the operation of the air conditioning compressor can be neglected. When the air conditioner is running, the windows of the car are usually closed, which improves aerodynamics and has a positive effect on fuel consumption.

9. Viscosity lubricating oils and fuel consumption.
Wrong choice of viscosity parameters for engine oils, gearboxes, transfer box, drive axles, of course, greatly affects fuel economy. The use of oils with unreasonably high viscosity characteristics can increase fuel consumption by 10-15%.

10. Impact on fuel consumption operating temperature engine.
Optimum engine operating temperature - 97-104 ° WITH.
When the engine overheats, the balance of the air-fuel mixture is disturbed, the mixture becomes discharged due to overheated intake air and rapidly evaporating fuel. The filling of the engine cylinders under these conditions is poor: the engine runs on a lean mixture, detonation ignition appears and sudden loss power. These conditions lead to further engine overheating and increased fuel consumption.

The main causes of engine overheating:
• Thermostat stuck closed.
• Water pump malfunction.
• Loose or damaged engine radiator cap.
• Dirty engine radiator or scale build-up inside the radiator and engine cooling ducts.
• Radiator cooling fan failure.

In cold engine conditions, the ECU program calculates rich fuel injection, this is necessary for stable operation in warm-up mode. If the engine temperature is below operating temperature, the ECU continues to control the quality of the air-fuel mixture according to the engine warm-up algorithm. For example, at temperatures below 80 ° With fuel consumption can increase by 15-20% more than the nominal. The cause of a low engine temperature is usually the absence of a thermostat or a faulty (loosely closed) engine thermostat.
There is another reason for increased fuel consumption due to low engine temperature - this is continuous operation car for short distances. If the driver uses the car to get to the place of work in 3 km. home and back, the engine will never reach operating temperature.

11. Wrong choice of wheel size.
Any design of automatic transmission is designed taking into account the operation of a car with a certain type and size of wheels. The hydraulics, kinematics and electronic control system of the automatic transmission will work optimally only with the recommended type and size of wheels. Violation of this requirement leads to a natural result - increased fuel consumption.
Some modern electronic transmissions (for example, Chrysler 41TE, 42LE, 45RFE) have an adaptation mode (quick learn), which allows you to optimize the automatic transmission control depending on its hydromechanical characteristics and adaptation to a given wheel size (pinion factor). But if on a regular a car wheels from an SUV are installed, then no miracles of modern electronics will save you from excessive fuel consumption.

The reason for the high fuel consumption often lies on the surface- it is enough to make a competent diagnosis of the engine, but sometimes there is a complex of malfunctions associated with various nodes and vehicle units, each of which contributes its share of errors to the overall vague picture of unreasonably high fuel consumption.
If you are in similar situation you will have to contact any car service with the problem of excessive fuel consumption, do not immediately blame specialists for incompetence, they will not be able to accurately determine its cause in one session of electronic diagnostics.
Sometimes the problem of increased fuel consumption can only be solved in stages, removing errors in each faulty node car, please be patient.

Many factors affect fuel consumption. First of all, these are aerodynamics, power and engine thrust on low revs, as well as the resistance of the road surface. A lot of energy is spent on acceleration to cruising speeds, but then the force is spent solely on overcoming the resistance of the environment. Therefore, in order to reduce emissions harmful substances from exhaust pipe environmentalists recommend resorting to a simple mechanism for handling the gas pedal. You can press it only at the start, but after a speed of 30 km / h, light touches are enough. Then the engine will not spin up over 2500 rpm. And this is quite enough for life in the city.

Modern motors have good low end performance. Thanks to direct injection manages to reach 80% of torque at 1200 rpm. If the engine is also equipped with a variable valve timing system, then 80% of thrust is available even from 1000 rpm. And this means that for a smooth start and acceleration it is not required to gas. By the way, according to the standards of the average European cycle, acceleration to “hundreds” is carried out in 30 seconds, and such dynamics just occurs within the boundaries of 2000 revolutions.

Keeping the engine from over-revving is not easy. If the car is equipped with a manual manual transmission, then you can smoothly release the pedal already at idle, and the engine equipped with electronic injection, he will slightly raise the thrust so as not to stall. The new BMW and MINI models already have a driverless start system. In order to avoid unnecessary regassing, the electronics itself exposes correct level fuel supply.

The higher the better

But then you need to reach the highest gear as quickly as possible. At a speed of 30 km / h, it is necessary to turn on the fourth stage, and at 60 km / h, it is necessary to set the “sixth”. Then the engine will spin below 2000 rpm, fuel consumption will drop significantly. For example, at 3 thousand revolutions, 3.5 times more fuel is consumed than at 1500 revolutions.

Thus, driving at a speed of 50-60 km / h in top gear will reduce the consumption of a 1.6-liter engine to 4-5 liters per "hundred". This technique is useful when the fuel level is zero, when you need to reach the nearest gas station with all your might.

In addition, modern cars use the Start-Stop system, which automatically turns off the engine at forced stops. On the "old women" you can turn off the engine yourself. Standing in traffic jams and in front of traffic lights without a working power unit gives a total of 5% more fuel savings. But here we must remember that frequent starts harm the mechanics, and it is better to turn off the engine at stops lasting more than one minute.

Tires and aerodynamics

Well-inflated tires help save fuel. Many manufacturers in standard conditions it is recommended to inflate the "front" to 2.2 bar, and the rear wheels to 2.3 bar. This is the most comfortable pressure for R16 and R17 wheels. But many do not follow the tires for months, allow pressure to be released and forget that the tire sags on a loaded car, increasing the contact patch, which leads to increased wear and increased fuel consumption. Therefore, to travel with the family to the country with a simple belongings in the trunk, you need to increase the pressure in the tires. Each car model and wheel size has its own value. For example, on Focus II with 205/55 R 17 wheels, it is recommended to run in rear tires 2.8 bar. And at Ford Mondeo rear wheels 215/50 R 17 recommend pumping up to 2.9 bar. Then the contact patch of the wheels with the asphalt straightens up to standard values and will decrease by about 1.5 times compared to the minimum pressure threshold. As a result, rolling resistance on asphalt will decrease. And this is about 10% fuel savings. But before pumping the wheels, you need to look at the instructions.

"Recommended for specific car pressure can be found on special stickers, which, as a rule, are located on the gas tank flap, in the doorway or on the glove compartment, - says Alexey Zayakin, head of the brand promotion and internal communications group at Nokian Tiers LLC. “Following the automaker’s recommendations will have a positive impact on tire performance: grip, hydroplaning resistance, fuel efficiency and tire mileage.”

But most importantly, in order to avoid an increase in fuel consumption, the aerodynamics of the car must not be violated. A roof rack, ridiculous sports body kits and collective farm rear wings can significantly distort the passage air currents on the car body. Turbulent eddies appear behind the stern, a zone is formed reduced pressure, which sucks the car back, preventing its movement. Now all cars are blown in wind tunnels, where engineers try to arrange the body in such a way that the air flow is dumped and chaotic already far astern. The sedan is considered the most optimal body type in terms of aerodynamics.

In general, these simple tips can help save on gasoline. Tests of domestic magazines have shown that thanks to a set of these rules, it is possible to reduce the consumption of a 1.6-liter atmospheric motor on C-class cars with manual box gears and front-wheel drive up to 3.5-4 liters of gasoline per 100 kilometers. True, driving so economically is a lot of work.

High fuel consumption is a problem for many drivers. Regardless of the brand of the car, it can consume much more than it should. Such a phenomenon is unpleasant for any motorist, since a lot of money is spent on spare parts and constant maintenance, and unforeseen expenses are added to them.

The reasons for the high consumption of gasoline are very diverse. But in any case, they must be identified. It is better to spend a couple of hours than to overpay gas stations every day. The material presented below will help to understand why the car "eats" indecently a lot.

Causes

To begin to deal with the problem of high consumption, it is necessary to establish the true cause of the "disease". It may seem banal, but before checking it is worth carefully inspecting the entire fuel system from the tank to the carburetor or injector. Sufficient quantity motorists, already at this stage, solves their problem.

Even a small leak can drain a couple of liters in a day, not to mention a violation of operating safety standards. vehicle. Of course, not all, but the main reasons for high fuel consumption are presented below:

• The wear of the clutch system increases fuel consumption by 10-15%.
• Deterioration of the gas distribution mechanism or incorrectly set valve clearances - up to 25%.
• Malfunction of the crank system - 10-15%
• Incorrectly set ignition - each shift of 1 degree can cause an increase in fuel consumption by 1-2%.
• Incorrect clearances, interruptions or factory marriage of candles - 10-15%.
• Deterioration of the CPG, a drop in compression by one unit takes about 15% of the fuel.
• Bad wheel alignment - 5-10%.
• The use of an air filter without replacement after 5,000 kilometers is 5-10%.
• Malfunctions in the power system or its poor setting - 20-50%
• Insufficient temperature antifreeze - 10-20%.
• Low tire pressure - by 0.5-0.7 kg / cm 2 plus 9-12% of fuel per 100 km.
• Poor rolling of wheels (there can be many reasons) - up to 20%.
• Frequent driving at night, that is, the use of light, adds up to 10% to the declared consumption.
• Ignoring engine warm-up and cold driving - up to 30%.
• High fuel consumption may occur due to its poor quality, on average, plus 5-10%.
• Excess cargo - for every 100-150 kg there is a surcharge to the already high fuel consumption of 10-15%.
• Driving style - up to 40%.
• Environmental conditions (headwind, heat, etc.) - 10-15%.
• Poor quality pavement, for example: poor grip of the wheels from the road - 10-15%.
• Derated motor (low compression ratio) - 10-20%.

Important! Far from all the reasons that affect high fuel consumption are listed above, and they are all quite relative. Since in each individual case, the weight of the car, its brand, driving style, condition of the nodes and many other factors should be taken into account.

It is worth noting that driving in the city (in mixed mode) and on the highway differ greatly in the amount of fuel required. All tests carried out specifically for a particular brand by an automaker take place under ideal conditions, and hoping for the same result is stupid. There will always be a surcharge, of course, the smaller it is, the better. But in addition to it, another 5-7 liters are often thrown on top, then it becomes uncomfortable. To determine the actual cost, you need to perform the following steps:

1. We find the starting point (let's call it that). good road somewhere not crowded with cars.
2. Refuel in advance (almost under failure) and prepare gasoline in a canister. Pour full tank, right under the neck.
3. Ride around the city for 10-15 kilometers in your usual manner and return to the starting point.
4. Pour gasoline into a measuring container, and again, but from it, add fuel “under the neck”. Remember how much you filled.
5. Now we carry out standard mathematical calculations and get the fuel consumption.

Having done such manipulations, you will be able to find out: “where is it worth dancing from” and how much gasoline consumption your unit has. If the consumption is 1-4 liters more than declared, then this can be considered the norm, but if it is even more, you need to look for the reason that caused the overrun.

Eliminate problems that cause excessive consumption of gasoline

Suppose: the diagnosis is carried out and the cause of the "ailment" is identified. You can start troubleshooting yourself if you have experience, or you can go to the service station. Below is a process for solving the main problems of high fuel consumption on different engines:

• Clutch problems. Complete replacement, since in 95% of cases it cannot be repaired.
• Problems with the ignition of the working mixture. In case of such problems, it is better to go to a car service, where, with the help of special devices, new, now correct, ignition angles will be set. This will avoid high fuel consumption in the future.
• Candle gap. You can solve the problem yourself. This requires special feeler gauges and knowing the correct clearances for your engine. After that, the big fuel consumption will be less.
• Insufficient antifreeze temperature. There can be several reasons, often this is the depressurization of the system. To fix the problem, swipe complete diagnostics.
• Low level compression. This requires the replacement of some components of the CPG (rings, fingers, pistons, etc.).
• Crank system. Bearing replacement.
• Timing. The service station will diagnose and replace everything necessary. This will reduce the high fuel consumption.
• Collapse-convergence. At the service station special equipment set the correct wheel angle.
• Tires. Just make sure they have normal pressure.
• Air filter. Diagnostics and replacement of some components of this system should be carried out every 5-7 thousand kilometers.
• Thermostat. Replacement or cleaning can reduce high fuel consumption.
• Electronic system. Over the past 10-15 years, almost all cars have been regulated working mixture using electrical appliances. But few people know that they can start to work incorrectly. If this is the case for you, have the car checked by professional electricians.
• Injector problems. The main reason for the high fuel consumption on the injector is its malfunction. A qualified specialist will be able to fix everything and return an acceptable expense.

There is no universal solution, so only diagnostics and patience will help you. But, to be honest, the result is worth it.

Important! Never use supposedly "magic" additives in gasoline for the engine, aimed at reducing fuel consumption. The only thing they do is shorten the life of the engine.

Diesel engine overrun

I would like to pay special attention to diesel engines. They, by design, are not much different from gasoline. Therefore, most of the causes of high fuel consumption coincide. But due to their specificity, they have so-called typical problems.

High fuel consumption for diesel engine arises from the following reasons:

• Poor condition of filters. To check this and then fix it: it is necessary to dismantle the air, fuel and oil filter s. Carefully inspect them, if there are the slightest complaints - it is better to replace them.
• Incorrectly selected oil. Use only the oil recommended by the car manufacturer for diesel engines this is very important, otherwise there will be a large fuel consumption.
• presence of a turbine. Many simply wonder why a diesel engine "eats" so much diesel fuel, although all the problems have been fixed - an elementary turbine. With it, on average, 20-30% more fuel will be spent.

TO typical problems with a high consumption on a diesel engine, poorly inflated wheels, injector contamination, poor engine warm-up and electrical problems can also be attributed, but they are all described above, therefore, they were not highlighted in this section.

How to reduce consumption

At the end of the article we will give tips on reducing fuel consumption. By following them, you can reduce consumption by a couple of liters for sure. To do this, do the following:

• Excess tuning that increases the area of ​​\u200b\u200bthe car violates the correct aerodynamic balance, so reduce it to a minimum.
• Use electrical appliances only when you really need to, otherwise you will increase fuel consumption yourself.
• Always warm up the car properly.
• Do not use an aggressive driving style.
• Move evenly, without constant accelerations and decelerations.
• Keep track of tire pressure.
• Use only quality oil, it greatly affects fuel consumption.
• Change tires with low resistance, if you have such, on tires with high resistance.

Our site has presented to you detailed information about a large expense, emphasizing something from it, you can save money. We hope that now you will not be tormented by the question: “Why such a high fuel consumption?” Good luck on the roads!

The reason for the high fuel consumption in the car

- this is one of the most common problems that motorists turn to service stations. Whether it's a small subcompact car or a powerful "gluttonous" SUV, in practice, the car owner can approximately orient himself when the need arises. next gas station. However, it also happens that gasoline begins to be consumed much faster, perplexing the car owner. High fuel consumption can occur for many reasons, and often several factors can lead to an increase in consumption at once.

Most often, this increase in this problem is caused by malfunctions in the electronic engine control system, namely, with wrong work sensors that determine the optimal ratio in the air-fuel mixture.

High fuel consumption is often caused by pressure deviations in the fuel system. In most cases, there is low pressure in the system, and there are a number of reasons for this: for example, the filter is clogged fine cleaning or the fuel pump filter is out of order fuel pump. The power of the power unit in such situations is reduced, and on vehicles with automatic transmission gear shifting (automatic transmission) increases the time of work on high revs, with which, accordingly, a large fuel consumption is associated. In a situation where the pressure in the system, on the contrary, is increased, the composition of the air-fuel mixture is disturbed in the direction of re-enrichment, which leads to a similar result.
Dirty engine nozzles are a common factor that provokes high fuel consumption when the normal formation of an air-fuel mixture is disturbed and the efficiency of the engine begins to decrease. Injectors should be cleaned at the first sign of clogging: failed ignition attempts, engine roughness in neutral, and misfiring when pressing on the gas.
The destruction of the catalytic reactor (catalyst) is another reason for high fuel consumption and a decrease in engine power. A destroyed catalyst begins to lead to an over-enrichment of the mixture, and this, in turn, overheats the catalyst and further disables it. As a result, power is noticeably reduced, gasoline is consumed faster. Clogged nozzles, low-quality gasoline or diesel fuel (DF), problems in the operation of the engine management system, or worn-out spark plugs can lead to the destruction of the catalyst.
High fuel consumption can cause too low or heat motor. In general, the optimal temperature ranges from 98 to 104 °C. Overheating leads to a depletion of the mixture due to the rapid evaporation of the combustible substance, the power decreases, the fuel is consumed faster. A cold engine also causes high fuel consumption (a rich mixture in this case is necessary to warm up the engine internal combustion). The cause of an incorrect operating temperature is most often a faulty thermostat.
Among others possible causes, why is the fuel consumption so high, — clutch wear, tire wear, faulty brakes, the wrong choice of lubricating oils and the driving style of the motorist.

Find out how it's solved this problem in the world with the help of modern technologies that reduce fuel consumption and look

Almost every country on our planet has experienced an oil crisis more than once. For example, in the early 1970s, the crisis hit the global economy as a whole. It was after this that world leaders began to think about how to maximize the energy resources of the planet.

Thanks to this incentive, car manufacturers have made some progress in reducing fuel consumption. foreign cars modern production extremely economical. And here domestic auto industry does not have this characteristic.

Saving fuel is not only an environmental issue, but also a matter of saving you money. After all, the more economical your car is, the easier it will be for you, namely, for your wallet.

The issue of saving gasoline by car is extremely relevant due to the ever-increasing price of this type of fuel. Some motorists convert their cars to diesel fuel, but there are ways to save on gasoline. It is enough to follow some tips, thanks to which it will be possible to significantly reduce the amount of fuel consumed.

In the matter of reducing gasoline consumption, an integrated approach is important, since if all the requirements are met, the result will be really noticeable. You must fix the amount of fuel that your car "ate" yourself.

In principle, almost all car manufacturers give such recommendations. For example, in the instruction manual for the car well-known brand Skoda, you can find a regulation regarding the accounting of fuel consumption. The specialists of this manufacturer recommend having a logbook in which it is necessary to fix the time of refueling the tank, the amount of fuel poured and other information. Keeping such a journal is very simple, and the effect of this simple technique will be positive.

According to the entries in the logbook, it will be easy to see whether the state of the machine has changed. In case of negative dynamics, it will be necessary to contact service center. You will also need to consult specialists if the consumption of benzyl has increased significantly. There are also electronic logbooks, which you can download to your smartphone as an application and make changes there in real time.

Start and warm up

1) Warming up the engine while driving

Lubricants that are produced according to modern technologies, have a much greater fluidity at low temperatures and are capable of more quick warm up than similar materials of earlier production. Therefore, it is worth forgetting the habit of warming up the car before starting to move.

In addition, warming up the car leads to excessive consumption of gasoline and adversely affects the condition of the car engine. It will be enough to warm up the car at idle for no more than 1 minute. After that, you can safely start moving.

Warming up for 5 - 10 minutes will be enough for the engine to fully warm up. This will not only warm up the engine, but also brake pads and gearbox oil. The last aspect has a very positive effect on the state of the automatic transmission.

2) Starting the engine without gas

Gassing is the addition of gas when the ignition is turned on. This phenomenon is extremely bad for a modern engine. Gassing contributes to more rapid wear engine and starter parts, as well as an increase in the amount of fuel consumed.

When carburetor engines were installed in cars, gas was needed to get fuel into the carburetor, and the fuel system itself went into normal mode work. Modern engines are equipped with a direct fuel injection system., so when starting the car, you do not need to touch the accelerator pedal.

Driving

1) Tachometer readings

You need to monitor the readings of this device, if it is present in your car. Fuel consumption also depends on the number of engine revolutions per minute. The lower the rpm, the lower the fuel consumption.

2) Switching speed at optimal engine speed

One should strive to upshift at RPMs that are optimal for the engine by shifting mechanical box or smooth addition of gas in the case of automatic transmission. This technique is guaranteed to lead to a reduction in the amount of fuel consumed.

If you are driving around the city, then the optimal speed will be 2000 in the case of a diesel car or 2500 if the car runs on gasoline. It is undesirable to change gear when the engine of the car has not yet gained optimal speed. If it is too early to upshift, the details piston-cylinder group wear out faster, and the car will consume more fuel.

3) Moderate addition of gas

If you add gas too slowly and tighten the acceleration time, then the car will “eat” more. Gas should be added moderately, while the engine should give 2000-2500 rpm if the car is running on diesel, and 2500-3000 rpm in the case of cars running on gasoline. Modern engine works best at medium speeds, rather than at low or high.

4) Smooth start from a place

If you abruptly take off, then excessive fuel consumption is guaranteed. You need to try to move off smoothly and confidently, and accelerate without jerking.

5) Optimal Speed movements

Each car has a certain range of speeds at which the car consumes a minimum of fuel, and the engine works as efficiently as possible. This interval depends on which engine is installed in the car, on the transmission of the car, weight, aerodynamics and other external factors. The boundaries of the speed interval must be determined independently experimentally, and after determining it is desirable not to go beyond the optimal speed regime.

6) Reduce speed at stops near traffic lights

You need to try to calculate the speed of the car in such a way that you do not have to stop near traffic lights, especially if you are familiar with this route. If you see that you will not have time to slip through, then you need to slow down in advance so that by the time the red light goes out, you have managed to drive up to the traffic light, but at such a distance as not to stop.

7) Failure to shift to neutral

In all cars modern type, even if the car is carbureted, shifting the gearbox to neutral when releasing gas and braking before stopping will not help reduce the amount of fuel consumed. In this case, fuel is supplied to the engine in the same way as in the case of idling. The engine management system recognizes the release of gas and movement in gear as forced idling, that is, as a negative acceleration, so the fuel supply is either reduced or stopped altogether.

8) Motor braking

It is advisable to use the regular one as little as possible. brake system, and instead it is recommended to brake with the help of the engine, that is, either gradually reduce the gear or drive with the gear engaged without pressing the gas pedal. If you need to perform a maneuver, enter a turn or stop, then it is desirable to predict the trajectory of movement in such a way as to perform the desired action simply by dosing gas. If you do not press the brake pedal in order to forcibly reduce the torque, then you can not only save on fuel, but also secure the movement itself, and especially in the case of very slippery road. If there is ice on the road, it is advisable to use only the engine for braking and gradually shift to a lower gear. It will also save you from skidding.

9) Use of the terrain

If you are driving on a section where there is a descent, and the road itself is visible very well, then it makes sense to release the gas. In this case, instead of the engine, natural gravitational forces will work. But while driving downhill without using the gas pedal, you can not remove the car from gear, it is better to switch to a higher one. The run-out in this case is reduced, but at the same time a system is activated that will turn off or reduce the supply of fuel to the cylinders. This will reduce fuel consumption.

10) Idling

There is an opinion that idling is safe for the motor, but, in fact, this is not so. If the engine is in this mode for at least 10 seconds, then during this time it will consume more fuel than when starting and starting to move. Therefore, if you need to stop for more than 1 minute, then it is advisable to turn off the engine completely. This will not only save more fuel, but also help extend the life of the engine itself.

11) Reverse and "toffee" on a car with an automatic transmission

If the car has an automatic transmission, then it “knows how” to move on a flat area without using the gas pedal. If the "D" or "R" mode is on, then the wheels will receive such a torque that is enough to make the car move. This is a good idea to use while driving. in reverse or in a toffee.

12) Driving distance

If you are moving into dense stream, then there should be such a distance between you and the car in front so that you can move slowly, but continuously, without braking until the car comes to a complete stop.

13) Maximum speed

It is advisable not to exceed the speed of 90-100 km / h, as more fast driving requires more fuel.

14) Quiet ride

Aggressive maneuvers, speeding, hard braking and multiple changes of location lead to the fact that the car consumes more fuel.

Auxiliary devices

1) Installation and timely use of cruise control

If you are driving on a good level road and your car has cruise control, then you can use it, as this option can significantly reduce the amount of fuel needed for consumption. On the other hand, if the road is sloping, cruise control cannot be used, as in this case the automatic transmission changes gears too often.

2) Using a GPS Navigator

The navigator will greatly help you navigate in unfamiliar areas, and often helps to shorten the route.

parking

1) Convenient parking

If you are planning to park your car in long term, then it is advisable to park the car in such a way that later it would be possible to leave as easily as possible. If the engine is well warmed up, then leaving such a parking space will require much less energy for maneuvers than when the engine is not fully warmed up.

2) Parking without the need to reverse

When parking, it is advisable to park the car in such a way that later it would be necessary to start forward, and not backward, or it would be necessary to reverse very little. Maneuvers performed in reverse require more fuel than similar movements in forward gear.

Exploitation

1) Roof rack

If you leave even an empty trunk on the roof of the car, then it aerodynamic drag will increase by a certain percentage. In the case of an empty trunk, fuel consumption will increase by 5%, and in the case of a full one - by 40%. Therefore, it is not advisable to once again ride with this additional load on the roof.

2) Ballast in the car

The more the car weighs, the more fuel it requires. To transport 100 kg of excess weight, you need 10% more fuel.

3) Timely replacement filters (air and oil)

If you replace these filters in time, you can not only prevent premature wear engine, but also increase its efficiency, which, in turn, will lead to more efficient fuel consumption. Motorists change the oil filter in a timely manner, as a person will notice the presence of defects during the change of engine oil. If you do not change the air filter in time, the fuel-air mixture will be over-rich, and this leads to excessive fuel consumption.

4) Engine oil

It is advisable to use only those engine oils that are recommended for use by the manufacturer of your machine, as this oil will meet all the characteristics of the engines and the prescribed operating conditions. Timely oil change will increase the efficiency of the engine, reduce the degree of wear and the amount of fuel consumed.

5) Removing snow, ice and dirt from the machine

If you remove snow and ice from the car before driving, this will not only protect you while driving, but also reduce the aerodynamic drag of the car. Also, the resistance of the car is affected by the dirt that accumulates on the body and bottom of the vehicle. It is best to treat the body with special mastics, which will help improve aerodynamics.

Tires

1) Correct pressure

This is very important factor on the issue of fuel consumption. If the pressure is underestimated, then the contact area of ​​the wheels and the roadway increases, and therefore the friction also increases. And this may be one of the reasons for excessive fuel consumption by the car. It is extremely important to check tire pressure at a time when the temperature outside changes noticeably.

2) Increasing tire pressure

Each conscientious manufacturer indicates the permissible tire pressure range. Experts recommend setting the maximum possible mark from this range, since at such a pressure the contact area of ​​\u200b\u200bthe tires and the roadway will be minimal, and therefore there will be less friction. By following these simple tips, you can save a tidy sum on fuel.

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