We all know that small-displacement cars save fuel. What are the disadvantages of small displacement vehicles?

We all know that small-displacement cars save fuel. What are the disadvantages of small displacement vehicles? Many people attribute fuel consumption to displacement, which is actually inaccurate. Fuel consumption is closely related to factors such as cargo weight, road conditions, vehicle wind resistance and driver's operation. Considering the comprehensive conditions of the engine, the fuel consumption of a large displacement and high horsepower engine is not necessarily higher than that of a small displacement and low horsepower engine.

Displacement and fuel consumption are more of an accompanying relationship.

Regarding the relationship between displacement and fuel consumption, some people compare it to the relationship between bowl and appetite. Fuel consumption is like appetite and displacement is like bowl. How much rice you eat has nothing to do with how many bowls you use.

Then someone has to ask: "Since it doesn't matter, why do you see a lot of data saying that the larger the displacement of the same model, the higher the fuel consumption?" This is the so-called adjoint relationship Large-displacement vehicles have the ability to generate more power in a short time, which means that large-displacement vehicles have the ability to generate high fuel consumption. On the other hand, it is difficult to produce high fuel consumption with low displacement.

Then try to choose a car with low displacement? No, if we only consider the displacement without considering the body weight, then talking about fuel consumption is hooliganism.

"Enough power" is complete nonsense.

Many people evaluate the power of small displacement engines, and most of them are "enough power". But what is enough motivation? Is the beginning enough? When it takes more than ten seconds for your car to accelerate 100 kilometers, it's not called "enough power", it's called "poor power". You attach great importance to the ability of low torque acceleration when driving in the city, because you will use this acceleration when following the car, preventing traffic jams and passing yellow lights. If it is too slow, it will be very sad to drive.

Power meat has a greater impact on B-class cars and B-class SUVs. Many people think that buying a low-priced B-class car or SUV is a very cost-effective choice. But if the master doesn't suggest it, the power is not high, and the car is much heavier than the car with the same displacement. It must be difficult to overtake.

With the same horsepower, there is a big difference between the acceleration of small displacement self-priming and small displacement turbine.

Many people prefer small-displacement turbines to small-displacement turbines, thinking that simplicity is always more reliable, but many people regret it after buying it. Because self-priming pays more attention to the acceleration in the middle and late stages, the maximum torque is generally 3000 rpm, and Honda's earth dream will reach 4600 rpm. Such a high speed is not used in general driving situations, so many people feel that their acceleration experience cannot reach the marked horsepower.

However, the output point of the small displacement turbine is relatively high, and the basic 1500 rpm comes out. Driving in the city, you will feel more motivated and the gap in experience will be greater. Only when driving on the highway, the acceleration in the middle and rear parts of the turbine is worse. (This situation is only for small displacement) Therefore, when choosing a turbine or self-priming, you should make a choice according to your own situation.

Small displacement must be more reliable?

Many people think that a small displacement engine must have a large displacement to save fuel, and the simpler the comparison, the more reliable it is. However, when we look back on the recall events in 20 18, we will find that more than 85% of the engine recalls occurred in small-displacement engines, whether it was oil increase or oil leakage. In contrast, 20 18, have you ever heard of a 2.0L or 2.5L engine being recalled?

Of course, it doesn't mean that a 2.0L engine is necessarily more reliable than a small displacement, and there is no direct relationship between reliability and displacement. In fact, today's small-displacement engines should not only meet the emissions, but also meet the power demand. Many new technologies have been adopted and need to be screened by the market. Not all small displacement engines are reliable.