Is it true that an automatic transmission consumes more fuel than a manual transmission when driving

From the perspective of the driver's driving technology, if the driver's oil separation is perfectly coordinated and the timing of the shift is very accurate, then the manual transmission car is slightly better than the automatic transmission in terms of fuel consumption. To talk about manual fuel saving or automatic fuel saving, it must be the same model (the same vehicle weight and wind resistance manufacturing process), the same displacement, the same road conditions, the same test driver (driving technology at the upper level), usually manual fuel saving.

<> traditional automatic transmission, its most typical feature is the key component - the torque converter, also known as the fluid coupling, through which the engine and the wheel shaft can become a flexible connection, in order to offset the impact caused by the mismatch of speed, to be familiar with the various gears of the automatic transmission. Because many people are complaining about the driving experience of automatic transmission, in order to increase the driving experience of automatic transmission, manufacturers have added more gear options to the gearbox, such as S, L, M and other gears.

Wait for the traffic light, make a prediction in advance at the intersection, if you find that you can't pass this intersection to slow down and slide in advance, try not to refuel and grab the light, if the intersection light is not long, it is recommended not to change gears, if it is more than 30 seconds, you can push it to neutral. When waiting for the traffic light, you can release the accelerator pedal at an appropriate distance in advance to slide the brake and wait for the light, do not keep the car in D gear when waiting for the light, you can switch to N gear, and then step on the brake, and then hang D gear to start normally after the green light is on. Remember to clean out excess items in the trunk often to "lighten" the load on your car.

In fact, the weight of a car has a great impact on the car's drivability and fuel consumption.

To choose a place with better road conditions to drive, everyone should know this, just like running at high speed than the national highway fuel efficient. Avoid sudden braking: too rapid braking will increase fuel consumption, in the usual driving to be more uniform, try to use the point brake brake method is better; Bigfoot throttle and brake are the culprits of high fuel consumption, and closing the throttle early can definitely save fuel, and this is not necessarily slower than continuing to refuel until the last minute and braking sharply.

It's not like this, some automatic cars are particularly fuel-efficient, and the car cost is not fuel-efficient, and it can't be seen whether it is a manual transmission or an automatic transmission, but it depends on its fuel tank and configuration.

In real life, the fuel consumption of manual transmission and automatic transmission is about the same, if it is a novice to open a manual transmission may be more fuel-efficient than automatic transmission, in fact, automatic transmission fuel saving or manual transmission fuel saving, there is no standard answer to this, because it involves the driver's driving technology, but theoretically automatic transmission is more fuel-efficient.

Not necessarily, it depends on the different cars, so not all automatic cars cost gas.

Because the automatic transmission car is changed through sensors, and the gear and speed do not necessarily match, the automatic transmission car has higher fuel consumption than the manual transmission.

Because such a car takes a long time to start and shift gears, the process is more cumbersome, more difficult, and the fuel consumption is relatively large.

Because the automatic transmission car takes a long time to start and change gears, and the operation time is relatively long, so the fuel consumption is relatively large.

This is because the manual transmission vehicle can automatically change gears, so that some of the fuel can be reduced, and it can be more improvised.

Manual transmission cars are more fuel-efficient than automatic transmission cars, manual transmission is mainly through the subjective behavior of people to change gears, so that they can adapt to the road conditions at any time, increase or decrease gears at any time, and reduce unnecessary power waste. In the past, the automatic transmission technology was not advanced enough, mainly based on 4AT; A little more fuel-efficient. The automatic transmission is completely controlled by the computer, and the driving computer can only collect engine signals, external temperature signals, vehicle speed signals, etc.

It is not possible to increase or decrease gears in time according to the actual surrounding environment and road conditions like manual gear shifting. Therefore, the transmission efficiency should be lower.

Except for the most entry-level models, most of which are manual transmissions, most of the models are mainly automatic transmissions, supplemented by few manual transmission models. Even many luxury brands don't have a manual transmission option. This is a trend, because automatic transmission is really too convenient, especially for female drivers, it is simply a boon.

When it is particularly congested, it is the same as the snail to move forward a little bit, at this time it is hung in a gear, and when the red light is generally hung in neutral gear, by actively adjusting the shift gear according to different road conditions, so that the car can drive at an economic speed for a long time, especially fuel-efficient.

It is difficult to say absolutely, if it is a few years ago are 4AT, 5AT in the era of dominance, the same driver of the same model, manual transmission models can generally be more fuel-efficient than automatic transmission models, mainly because the automatic transmission calibration at that time is generally not very efficient and there are not many gears, and it does not have an advantage in fuel saving. This question has actually been controversial, after all, there are too many factors that affect fuel consumption, driving habits, car conditions, road conditions, etc. are all factors that affect fuel consumption.

The automatic transmission car relies on hydraulic oil to drive, and it can be completed by a hydraulic torque converter in the middle, so the control range is very limited, only about 86, and the loss of indirect output must be greater than the loss of direct output, so it is reasonable for the manual transmission car to save fuel.

Because there is a fluid coupling in the transmission of an automatic transmission car, it will lose part of its energy during operation, which is the main reason why the fuel consumption of an automatic transmission is higher than that of a manual transmission car.

The reason why the fuel consumption of automatic transmission cars is higher than that of manual transmissions is that the problem lies in the power transmission components in the middle, and the biggest impact is the reason for the different transmission efficiency caused by the transmission structure.

This is mainly due to the fact that there is a fluid coupling in the transmission of an automatic transmission, which causes a part of the energy to be lost. I think that since I have chosen an automatic transmission car, which brings a certain degree of convenience, I must be able to tolerate such losses.

Not necessarily. 1. Because there are many factors that affect fuel consumption, such as congested road sections, high-speed roads, urban road conditions, etc. Under various conditions, the difference in fuel consumption is very large.

In the city, the manual transmission starts frequently and changes gears frequently, and the fuel consumption is higher than that of the automatic transmission. Automatic and manual transmissions have similar fuel consumption under different conditions.

2. Sometimes automatic transmission is more fuel-efficient, and driving technology is the main reason for fuel consumption. Novice driving skills are not good, the start is slow, the gear change is not timely, etc., and it is more fuel-intensive to open a manual transmission than an automatic transmission. The old driver has an accurate grasp of gear shifting, which can give greater play to the effect of manual transmission, and is more fuel-efficient than opening an automatic transmission.

But now the automatic transmission is close to the efficiency of the manual transmission, even if the old driver drives, the fuel consumption is almost the same.

3. The reason why the automatic transmission is considered to have higher fuel consumption than the manual transmission is that under the conditions of the same opening ridge, there is a fluid coupling in the transmission of the automatic transmission car, which will lose part of the energy during operation, which is the main reason for the higher fuel consumption of the sock moving transmission car than the manual transmission car.

Some people say that automatic cars consume more fuel than manual transmissions? This question has always been controversial, after all, there are too many factors that affect fuel consumptionSince this question is to discuss which of the two is fuel-efficient, then assume that other conditions are exactly the same, only the gearbox is different.

1.Transmission efficiency

For the transmission efficiency of the two, some companies have used the Ford Fiesta to make a comparison.

Through comparison, it can be found that the transmission efficiency of the automatic Ford Fiesta is 89%, while the manual transmission is 89%, which shows that the transmission efficiency of the manual transmission is higher.

Through calculations, we can see that the automatic Fiesta has less than the maximum power on the manual Fiesta wheel. It can be seen that if the same driving experience and acceleration are to be achieved, the automatic transmission needs to have more rev and power delivery, and if other things are equal, the automatic transmission needs to consume more fuel.

Reasons for this phenomenon:

This is related to the transmission of the gearbox, the manual transmission engine is transmitted by the clutch plate coupling friction, and it can be said that there is almost no power loss between the two without stepping on the clutch, so the transmission efficiency can basically reach more than 80%.

The power transmission of an automatic transmission is carried out through a torque converter, which is simply a soft connection, and the two are driven by a high-viscosity liquid, which is why vehicles in D gear do not stall like manual transmissions.

It can be seen that the difference in transmission efficiency affects the size of fuel consumption.

2.The manual transmission is more precise in the control of the gears

Compared with the computer-set shift logic of automatic transmissions, manual transmissions allow the driver to fully control the vehicle, allowing the rpm to always be controlled in a lower economic range, some manual transmissions can perform gear shifts at 1500 rpm, while automatic transmissions have to be at least close to 2000 rpm to upshift. To some extent, this is also a manifestation of fuel economy in manual transmission.

However, on another level, with the advancement of automatic transmission technology in the current market, the shift logic is becoming more and more optimized, and the number of gears is also increasingCoupled with the use and popularization of CVT gearbox, the transmission ratio can change at any time according to the operating conditions of the engine, which can better improve fuel economy.

Yes, because the fuel displacement of automatic transmission cars is generally relatively high, and the engine runs faster, so it consumes more fuel than manual transmission.

It's not true, and this statement is not particularly comprehensive, and it is also unscientific, and the general automatic transmission car is also more fuel-efficient, and then the operation is particularly simple.

Yes. Because automatic transmission cars do not handle the car very well, it will be more expensive.

The manual ones should be controlled to save fuel. There is also the bad driving habit of driving an automatic car. Because it won't turn off, you don't have to care about the speed, and you often have a big foot accelerator, and a big foot brake can you not use fuel?

From the point of view of power transmission efficiency alone, it is not surprising that the answer is that manual is more fuel-efficient. However, fuel consumption is closely related to the driver. Automatic transmission is equivalent to only one driving style, when to upshift, when to downshift, are all programmed.

The manual transmission driver can freely change the driving style according to the mood and road conditions. The technology of the manual transmission driver is also one of the keys to fuel consumption, whether the engine brake, clutch control, neutral control will affect the fuel consumption.

Judging from the entire use of the car, the family car (new car) on the market, a car with a good powertrain match, in the daily driving of ordinary people, the automatic transmission will not be significantly more fuel-efficient than the manual. Manual is no longer absolutely fuel-efficient.

For example, if you go on the highway, no matter how much you drive, on some specific roads, you can't drive manually with lower fuel consumption than automatic with the same displacement, because the gear ratio of the MT is fixed. 6th gear 120 requires 2,78 rpm. Some CVTs or DCTs rev much lower at the same cruising speed, especially turbo ones.

Although the MT transmission is efficient, the CVT or dual clutch allows the engine to rev at a lower speed and the piston and cylinder friction lose less energy.

As for your problem, fuel consumption rises in winter, if it is a winter in the Northeast, catch up with the recent cold wave, regardless of automatic transmission manual transmission, the fuel cost is fuel, because the amount of low-temperature fuel injection increases, this is not solved.

1. Due to the complex structure, the transmission efficiency of automatic transmission is lower than that of manual transmission, so it consumes fuel.

2. The shifting timing of the automatic transmission is simulated according to the change of torque (load and throttle opening) perceived by the sensor; In the case of manual transmissions, the timing of gear shifts is based on the driver's will (driving level) – random and predictable judgment to grasp the shift point.

3. The difference between automatic transmission and manual transmission is that the automatic transmission has an oil pressure system, which plays the role of the first hydraulic transmission power oil. This power oil system typically distributes about 5 kilowatts of power transmission, in addition to the loss of energy during driving due to the torque converter.

However, this device requires the vehicle to enter one gear as much as possible during movement to keep the oil pump running, otherwise, the automatic transmission in the Nth gear operation state will burn out due to insufficient oil pressure.

4. The vehicle walks by relying on the torque of the engine, which is transmitted to the transmission system through the friction plate and gear of the automatic transmission, which is the power transmission of the torque converter, and this set of mechanisms containing the fuel converter can accelerate the vehicle. Generally, the mechanical energy loss of the engine is consumed on the hydraulic system at the beginning of the converter, and then it is consumed on the mechanical conversion. As a result, most automatic transmissions consume more fuel than manual transmissions.

5. At present, some car transmissions have used a gear locking device to overcome the loss of torque converter, but this function will only play a role when the vehicle speed reaches a certain speed (such as 30km h, which varies from car to car), so that the fuel consumption of automatic transmission cars and manual transmission cars is about the same.