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How to reduce car appetite and reduce gas costs

How to properly operate the car and not spend extra money at gas stations, said the specialists of the General Motors concern.

How not to spend extra money at gas stations.

Since December last year, the cost of gasoline at Ukrainian gas stations has steadily increased and the issue of fuel economy has become relevant for many. About how to properly operate the car and not spend extra money at gas stations, told experts of the General Motors concern.

  • timely replacement of the engine air filter improves the efficiency of the machine by 4%
  • well-inflated tires - by 3.3%
  • rejection of climate control - immediately by 10%
  • unloading the trunk from unnecessary things will moderate the car's appetite by 2% for every 45 kg of trash
  • choosing the best speed in top gear (about 100 km / h) will save up to 3 liters per 100 kilometers in the suburban cycle

GM experts also recalled that excess acceleration and braking increase fuel consumption by 33% when driving on the highway and by 5% in the city, and every 15 minutes of idle time at idle "eat" about 0.9 liters of fuel.

How to save gasoline tips from GM






Pay for the "fuel" during a trip to the sea can be much less - sometimes twice. But in the city, the savings can be significant.

How to save on gasoline

You gathered in the Crimea in your own car, and then gasoline again "jumped" by ten percent? Do not be discouraged: “Today” will tell you how to reduce fuel costs by 20% without straining. By the way, to drive economically and ride safely - in most cases the same thing!

Factor One, Technical

Factor One, Technical

First of all, remember: you can save fuel only on a fully functional car. Any little thing, any malfunction can significantly increase consumption. Even such “nonsense” as a occasionally thawing candle can “eat up” an extra two or three liters on a tank. And in the end, you "will not reach" is not at all extra 20-30 kilometers. The main malfunctions and their effect on fuel consumption are in the table. It will be cheaper to repair!

Find your fuel

Refueling with cheap fuel, do not rush to rejoice: measure the mileage on this gasoline. It may well turn out that the cost of the distance traveled increased as a result - the engine replenished the missing calorific value of the fuel with its amount.

  • Even refueling only at "branded" gas stations at about the same price, you can get a different flow rate for two gasolines poured at different network gas stations. By the way, this does not mean at all that one of the gasolines is much better. It’s just more suitable specifically for your motor. Indeed, modern types of high-octane fuel can have oxygen-containing additives, and even an admixture of ethanol. Effective combustion of such gasolines is possible only with the intervention of a smart on-board computer capable of recognizing this fuel and changing engine settings accordingly. Therefore, it is worth blinking and experimentally determining which of the nearest gas stations should be regularly refueled.
  • A separate topic is fueling with low or high octane (unless, of course, the manufacturer allows operation on several types of fuel). You will have to determine it, also by experimenting.
  • And finally, seditious thought: what if not gasoline at all? Modern systems of gas equipment allow, practically without reducing the dynamics of the car and without increasing consumption, switch to liquefied gas. Which, firstly, rises in price more slowly than gasoline, and secondly, at all times it costs about half the price of the 92nd. Of course, initial investments are needed (from $ 300 to $ 1,000), all the more significant the more modern the car. But the costs pay off after a maximum of six months.
  • The diesel engine, although it does not allow saving as much "famously" as switching to gas (only about 30%), has its advantages, among which there is more torque at low and medium speeds.

The main factor: human

No matter how trivial, but the fuel consumption depends on the style of your ride no less than on the technical condition of the car and the quality of gasoline! And someone in his defense will say: "But I like a fast ride, and I'm ready to pay for it!" For the pleasure of speed, a feeling of full engine power - I agree. But for the missed necessary turn, the time lost as a result - is it worth paying for it?

  • Before you start moving in the city, mentally “calculate” the route. And "suddenly" it will be recalled that the exit from such a flyover was blocked due to repairs, and the passage on another bridge was limited. And to go round just nothing! And the road there is less busy ...
  • The second city "economy postulate": the movement of the "zigzags" not only leads to unjustified risk, but also does not give any gain in time. But overspending - please. In order to agree with this statement, ask yourself: how many times have you taken the risk of dangerously “squeezing” into the next row, moving much faster than yours? And didn’t it always turn out right there that the very strip that you just left is moving faster than everyone else?
  • The third way to save in the urban cycle is to “calculate” the traffic situation. The author of these lines recently witnessed how the tractor of the landscaping service did not lag behind passenger cars for 18 intersections! He just drove his maximum 35 km / h, foreseeing the moment of turning on the green light at the intersection. And overtook! And how much fuel can be saved by moving at a uniform speed, without sudden accelerations and braking!
  • But it is in the city. And on the track? Remember how many times it happened that a car that dared you at high speed suddenly showed up after fifteen kilometers. “Wagon” weaving in the tail behind the overcoming long climb. You were riding your 110 slowly and safely, avoiding fines, saving fuel and risking nothing! In such cases, it is customary to grin sarcastically: "... what, daredevil, surpassed?". And now let's recall how many times it was the other way around ... The difference between these two driving styles can be five to eight liters per hundred.

5 myths of saving

1. When driving from a hill, you need to turn off the gear.
This advice was fair some 30 years ago. With the advent of EPHC (economizer of forced idle) in carburetor systems, and even more so on modern injection engines when braking an engine (gearbox), the electronics shut off the fuel supply, and it consumes 0! When the transmission is turned off, gas mileage resumes, and the savings come to an end. By the way, the PXH mode is very useful for the motor - burning and soot are removed. Therefore, from a hill - only in gear - it is more economical, more useful, and better from the point of view of traffic safety!

2. Need to switch to higher gear faster.
The most economical engine speeds are in the range of 2500-3500 rpm. This is due to the best ventilation conditions of the combustion chamber (at high suction speeds, increased turbulence forms in the cylinders, which mix gasoline with air better and prevent detonation).
With a decrease in speed (up to 1500), consumption increases, although not by much. Well, and with a drop in speed below 1.5 thousand, gasoline consumption rises significantly - the idle system begins to intervene in the mixture formation, adding "excess" fuel. In addition, exhaust gases leave the cylinders poorly, and the fresh mixture does not completely burn out. Therefore, do not particularly "tighten" with a shift to a lower gear.

3. When driving in a traffic jam, you must constantly turn off the engine.
The advice is valid only if you have to stand for more than a minute, and you probably know it (for example, if you stop at the "long" traffic light). If you turn off and start the engine often, it will, on the contrary, lead to overspending and increased wear of the motor. As well as the rapid failure of the battery. Do you need it?

4. Acceleration must be slow.
Seamlessly - yes. But not slow: prolonged movement in lower gears will lead to cost overruns. Of course, at the time of acceleration, the instantaneous flow rate increases significantly, but the shorter it is, the faster the engine will reach its optimal operating mode and reduce gasoline consumption.

5. Spoiler (wing) reduces consumption.
In no case. He has a different task - it is better to press the car to the road. And he does this due to additional resistance to air flow (read: additional fuel consumption). And the larger the area and angle of the spoiler, the more it affects the flow. If you are not going to overcome steep turns on the track with the highest possible speed, it is better to refuse the wing in order to save. In an extreme case, “for beauty” choose a “neutral” spoiler that does not have a pronounced angle of attack and is only an imitation of a sports accessory.

Top tips

1. Do not press the gas pedal all the way.
This way you re-enrich the mixture. Add gas with increasing speed, “outstripping” the engine with the pedal by a maximum of one third. This is especially true for driving in low gear: if you push the pedal “to the floor” at 1,500 rpm, you will achieve nothing but a significant overrun.

2. Switch correctly and on time.
Driving at either too low or too high speeds results in overruns. As already mentioned, the optimum crankshaft speed is recognized between 2500 and 3500 rpm. No tachometer - learn to navigate the sound of the motor.

3. Avoid high speeds.
Air resistance increases in proportion to the square of the speed! If your car consumes about 7-8 liters per "hundred" at a moderate speed, you can rest assured: at 180 km / h its "appetite" will increase to 16-18 liters!

4. Monitor the flow rate with instruments.
When driving on the highway, it is best to enable cruise control. In this case, the electronics themselves selects the optimal (and therefore more economical) engine operating modes. In urban conditions, the included display of average fuel consumption will not be out of place. If there is no on-board computer on an old car, put a vacuum econometer for 50 hryvnias that is suitable for any car. Sometimes a single "oblique" look at the off-scale indicator of consumption is enough to discipline.

"Tips and myths verified. I agree . "
Sergey Nikolaychuk, participant, technical consultant of the only in Ukraine economy rally "Skoda Grand Prix Ukraine"

Comfort is never free. But...

For convenience, we most often agree to pay. But sometimes it turns out that giving up comfort does not make sense at all. For example, fuel consumption while driving a small car at a speed of 120 km / h with the air conditioner on and windows closed is about 8 liters. But open windows with the condition turned off will cost 10.5 liters. The phenomenon is explained simply: the included air conditioner “slows down” the engine less than the aerodynamic drag of open windows.

In all other cases, the included additional equipment leads to an excessive consumption of fuel. A radio operating at a significant volume, a rear window defroster, a heater fan in the "max" position, high and low beam - all this increases the consumption. In total, the fee for such a load on the generator can be up to 15% of an overrun. But saving on this is probably not worth it. Moreover, these costs can be fully compensated by using the following "small" tips:

  • 1. Riding in the darkness and silence, with a foggy rear window - certainly stupid. But switching the air intake flap to the “outside” position on the highway instead of turning on the fan at full power is an insignificant but saving both fuel and generator resource along with the heater motor. What other secrets of saving exist, which in total can result in a significant figure?
  • 2. About one percent of the savings you get by raising the pressure in the tires (for the track) by 0.2 "atmosphere". This, by the way, will also reduce the wear of rubber at high speeds.
  • 3. You will save one more percent ... choosing light instead of the black color of the car - it heats up less in the sun, the air conditioner and the climate fan work with less load. And do not forget about the need for safety reasons to turn on the headlights during the day on the highway - a dark car is poorly visible on the road.
  • 4. If there is no rain on the street - remove the wipers before a long trip (if they "do not hide"). It is unlikely that this will give more than half a percent, but still improve aerodynamics. In general, all aerodynamic "bells and whistles" such as deflectors on windows and "fly swatters" on the hood can both reduce fuel consumption and increase it in case of improper configuration and illiterate installation.
  • 5. In summer, use special summer tires with reduced rolling resistance. Winnings - up to 5%!
  • 6. Do an audit of the trunk. Fuel consumption for every 50 kg of excess weight is 2%! Remember this figure, and equipping the car on the road, for example, at sea.

LAST FACTOR: AERODYNAMIC

LAST FACTOR: AERODYNAMIC