SoFunction
Updated on 2025-03-02

Tips on how to save fuel by automatic transmission cars

1. Let’s talk about the start of automatic gear cars first: Many friends give too little fuel at the start, so it’s unnecessary, and it’s actually not good. The automatic gear shift design is 2500 rpm (change at around 2200 when the car is hot). When the oil is too low, the gear shifting is very slow. Not only does the engine sound loudly, it also easily causes carbon accumulation in the engine, and it will also affect the engine's life. Therefore, more oil is given to allow the speed to quickly reach 2500 rpm. The purpose of doing this is not only fast start, but also beneficial to the engine. Although the instantaneous fuel consumption can reach 40L, the average fuel consumption is reduced.
2. The automatic transmission car has the most fuel-efficient sliding gear! When the fuel is at the right time, loosen the accelerator. The instant fuel consumption at this time is: 0! ! , and can be maintained for a long time depending on the driving conditions. It is especially useful in the city: when you see a red light in the distance, loosen the accelerator with a barrier to slide; loosen the accelerator in time according to the road conditions in front; you can also do this in time on the highway (but I personally think it is unnecessary). This method is more convenient than manual neutral sliding. However, because it is automatic, neutral sliding is not recommended, which can easily damage the gearbox. This is because when driving at high speed or downhill, shift the gear lever to N gear, which is likely to burn out the transmission. Because the speed of the transmission output shaft is very high at this time, and the engine is running at idle speed, the transmission oil pump is insufficient for oil supply, and the lubrication condition deteriorates. Moreover, for the multi-plate clutch inside the transmission, although the power has been cut off, its passive plates operate at high speed under the wheel drive, the engine-driven active plates are very low, and the gap between the two is very small, which is easy to cause resonance and slippage, resulting in adverse consequences. When the lower long slope really needs to slide, the gear lever can be kept in D gear, but the engine cannot be turned off.
3. Master the timing of shifting gears. Although the automatic transmission car is an ECU that automatically adjusts the gear according to the driver's accelerator, if it can interfere artificially, it can also save fuel: Although the automatic transmission car is generally a 4-speed or 5-speed automatic transmission, the gear shift is very smooth. Except for the first gear, you can feel the shifting, other gears basically have no sense of frustration, but you can understand the shifting condition by observing the changes in the speed. Although constant fueling is a common driving skill in automatic gear, after reaching a certain gear, it will still maintain a high instantaneous fuel consumption for a long time before slowly coming back. If you loosen the accelerator after shifting gears and then keep it at the original speed, the instantaneous fuel consumption can be reduced a lot, thereby achieving the goal of reducing the average fuel consumption. At the beginning, you need to look at the change in the speed to understand the shifting condition. It is quite troublesome. After getting used to it, you can feel it yourself based on the depth of the accelerator (this requires frequent practice). --This is not easy to understand, but it is easy to see by trying to combine the data of driving the computer. The timing of automatic gear shifting is to follow the "release the throttle to raise the gear in advance, and lower the gear in advance when pressing the throttle to lower the gear in advance."
4. When driving an automatic gear car and waiting for a signal or traffic jam, some friends often keep the gear shift lever in D gear and press the brake pedal at the same time. If the time is short, this is allowed. However, if the parking time is long, it is best to switch to N gear (neutral gear) and tighten the parking brake. Because the gear shift lever is in D gear, the automatic transmission car generally moves slightly forward. If you step on the brake pedal for a long time, it is equivalent to forcibly stopping this forward movement, causing the transmission oil temperature to rise and the oil to deteriorate easily. Especially when the air conditioning system is working, it is even more unfavorable when the engine idles at a high speed.
5. The economic speed of automatic transmission cars is around 70-90KM/H, so it is entirely possible for the city to keep the speed at 60-80KM/H, which is more fuel-efficient.
6. When turning on the air conditioner in winter, you can use the engine's heat to save a lot of fuel.
7. When stopping at regular intervals, putting it in N gear can save fuel, and you can even turn off the engine first (the fuel consumption required for starting is lower than the fuel consumption required for idling for 2 minutes).
8. Maintain appropriate tire pressure: If the load capacity is large, replenish the air properly. It can consume fuel when the tire pressure is insufficient.

In short, saving fuel needs to be achieved bit by bit through good driving habits. It is impossible to have any way to save a lot of fuel at once. You can find the best fuel-saving method for you through observation and actual operation and combining your driving habits. I hope everyone will be better at brainstorming on the forum, communicate more and communicate more, and thank you for your support and help!

How to save fuel has always been the most important issue in the automotive industry and the most concerned issue for car owners. With the continuous changes in policies, oil prices are also changing. In recent years, the issue of oil prices has become the focus of the automotive industry. So for how to drive automatic cars to save fuel, I will tell you some driving tips.
(1) Generally, automatic transmission cars have P gear (stop gear), R gear (reversal gear), N gear (neutral gear) and D gear (forward gear). Pay attention to the reasonable use of automatic gears. When driving on flat urban roads, the gear should always be hung in D gear. The automatic transmission will switch between the four forward gears, without additional manual operation.
When parking for a short time, such as when encountering a short-term red light at an intersection, just step on the brakes. However, if the parking time exceeds 2 minutes, you should be hung in N gear, which can protect the gearbox and prevent the transmission oil from overheating; if the parking time exceeds 5 minutes, it is best to turn off the engine and hang in P gear, which is both environmentally friendly and can save gasoline.
Secondly, do not step on the accelerator when starting to accelerate. This will only increase the speed and cause the engine to roar and wear of the transmission, resulting in unnecessary waste of fuel. You should step on the accelerator lightly to use low-speed downshift to increase torque to increase speed. Speeding up evenly and speeding up after the speed increases will make people driving the automatic transmission car feel smoother.
When using D gear climbing, if you feel that no matter how you step on the accelerator, the power output by the engine cannot be as strong as when driving on a flat road, you should immediately switch to a high-torque low-speed gear climbing, which not only saves fuel but also reduces engine wear. (Mountain roads need to pay attention to road conditions and shift gears, and urban roads are generally not needed). Don’t make a lot of fuel when you encounter uphill in urban roads. You should make a lot of fuel before going uphill to speed up.
In addition to D gear, most automatic sedans have "3" or "2" gear. When the "3" or "2" gear is hung, the highest gear will not exceed "3" or "2" gear. Therefore, when encountering a relatively long downward slope, the gear can be switched to "3" or "2" gear according to the slope and speed, so that the vehicle speed can be controlled by gear limiting.
Bigfoot accelerator and brake are both the culprits of high fuel consumption. If you look farther, you can definitely save fuel when you close the accelerator early, and this is not necessarily slower than continuing to refuel until the last moment to brake suddenly.

(2) The economic speed of a general car is 90 km/h, so do not accelerate or brake suddenly when driving. The vehicle should accelerate or brake smoothly. When encountering a red light, you should release the accelerator early to let the vehicle slide; do not drive at high speed for a long time. If the highway can be maintained at a constant speed of 90 to 100 kilometers per hour, the fuel consumption can be appropriately reduced.
It is also important to use the automatic gears reasonably. The gear should always be hung in D gear. The automatic gearbox will automatically switch between the four forward gears without additional manual operation. If you keep shifting gears between first, second, third and D gears unnecessary, it will only increase oil loss and fuel consumption. When stopping at a red light, just press on the automatic pedal and keep the gear in the D gear position. And neutral gear is only used to trailer or restart the engine. Parking brakes are generally used to park or park when hitting steep places. Three stops are suitable for hilly areas and winding roads. The second gear is suitable for driving on slopes, and the first gear has the highest power and should be used when driving on very steep hills or snow or muddy roads. Note that the above points should be very effective in saving fuel.

(3) Manual gear car is most fuel-efficient when driving in high gear under normal safety conditions. However, traffic jams, traffic lights and other situations are often encountered on urban roads, so it is best to understand the performance of your car engine, the most economical and fuel-efficient speed, and then change gears with this. In addition, use less brakes, loosen the accelerator early when you need to go uphill, etc. There is a tip for automatic cars: when starting or want to accelerate, don’t keep pressing the accelerator. You should step on the accelerator, loosen a little, and then refuel. Otherwise, the car will automatically determine that it is driving uphill, increasing energy consumption.
Fuel-saving tips: Try to maintain a constant speed in the city and use D gear for automatic transmission. Speed ​​up evenly when starting; do not accelerate quickly and then brake. If the car is not fast, just lift the accelerator from a distance; when you see a red light from a distance, you can slowly stop and the automatic transmission car will be hung into N gear to wait; do not step the accelerator to the bottom when climbing a hill; do not step on the accelerator and brake with one foot. Sliding with the barrier will also save fuel; do not add too much fuel to the vehicle if you don’t go far; do not place heavy objects on the vehicle; if the vehicle is not washed for a long time, too much interior will also affect fuel consumption; use less car-mounted electrical appliances.
(4) The fuel-saving tricks in the era of soaring oil prices may not be "right" and have funny elements, but they also make sense, so you can learn from them.
1 Increase 4 rounds of air pressure to reduce friction
2 Clean the trunk, take away what can be put home, throw away the useless ones to reduce the weight
3. Go to the city
4 Avoid rush hours as much as possible, and rather take more detours than less congestion
50 In case of serious traffic jams, you can consider shutting down the engine and waiting
6. Take as few colleagues as possible after get off work and going out
7. Full load is absolutely prohibited. Install one less is one
8. Wear less clothes, choose thin and short shoes
9. Before getting on the bus, it is best to even put a fart
10 Try not to drive after dinner, especially when several people are full and take your car
11Don't put too many decorations in the car
12 Come on, don’t fill up, reduce the load
13 Do not turn on the air conditioner as much as possible, open the windows for ventilation and health and fuel saving
14 The most economical way to control the vehicle speed between 60 and 90
15 Don't let water go in the car, it's unnecessary
16 Come on, add it in the morning and evening, the later the better! Low temperature, more oil
17. Rapid speed faster when driving, eliminate drag racing, and reduce the number of times you connect
18 Appropriate use of neutral and barrier-mounted car
19 Don’t keep pets, and don’t need to take them out if you keep them
20. Going out to do business and go out to be corrupt. Take the public car as much as possible. If you can’t get into the public, just take someone else’s house.
21 Keep a distance from the car and find a car that is larger than you, which can reduce airflow resistance
22 Strengthen the early warning nerve of oil prices and hoard some oil tickets every now and then
23 Pay more attention to traffic lights, prepare early, and would rather wait than grab it
24 Don’t listen to CDs and radios when driving. Electricity is also oily. It’s better if the CD breaks, don’t repair it.
25 If the car lights can be turned on, if they can be turned on, if they can be turned on late, if they can be borrowed from others, if they can be borrowed
26 No cigarette lighter, electricity is required
27 Don't change the wide tire, change it back if you have changed it
The ultimate method: sell the car and buy a bicycle!