Literacy sticker: It's 2020, so don't confuse large displacement with high fuel consumption.

I still remember that at the beginning of this year, Corvette C8 announced its EPA rated fuel consumption parameters. 15.68? The fuel consumption of L's 100 km city is equal to that of McLaren 720S equipped with 4.0T engine. What's even more frightening is 8.7 per 100 kilometers? L high-speed fuel consumption, the same level of hybrid sports car NSX equipped with 3.5L engine matching three motors, the city's fuel consumption per 100 kilometers has also reached 10.69? L, it is no exaggeration to say that the fuel consumption of some domestic 2.0T family cars is so much.

Excellent results can be said to have "shocked" countless people in the automobile circle. Why is the high-performance sports car with rear drive in the middle so fuel-efficient, not to mention the American sports car with a displacement of more than 6L and an acceleration of 3 seconds per 100 kilometers, which is recognized as the "oil tiger with backward technology".

Because even in the summer of 2020, we can still see that many people are misled by the wrong view that "large displacement means high fuel consumption", and they publish fallacies full of strong "keyboard" style, such as high fuel consumption with large displacement, fuel economy with small displacement, backward technology of American cars and advanced turbocharging with small displacement. So this time, the author once again literacy, that is, there is no direct relationship between fuel consumption and displacement, displacement is only the cylinder volume. Borrow an example from a well-known car critic, that is, "the displacement is like a rice bowl, and the fuel consumption is like rice." How much you eat is directly related to how many bowls you use. Joke!

In addition to not consuming oil, large displacement has many advantages, such as calmness. I believe most people understand that no matter how big a turbine a small-displacement engine is equipped with or how high the speed is adjusted to "beat the chicken blood", it is impossible to achieve the linearity and confidence brought by a large-displacement naturally aspirated engine. At the same time, due to the large displacement of the base, the engine runs in the low speed range for a long time. Theoretically, a large displacement engine can also have better durability than a small displacement engine with the same power. It seems to explain this well that engines such as trucks, buses and ships don't "follow the wind" to boost with small displacement.

Then, since the large displacement output is linear, durable and oil-free, why is the displacement of domestic models generally smaller and smaller? The reason is simple, that is, the emission tax in our country is very high. 1.0L is only taxed at 48%, and more and more three-cylinder engines are back in the rivers and lakes, perhaps because of this. The discharge tax of 1.0L- 1.5L is 5 1%. At present, 1.5T engine is the purchase threshold for new mercedes benz c class, E class and even CLS to save this cost (although the price of Mercedes-Benz 1.5T+48V light mixing is not much lower).

1.5L-2.0L discharge tax is 54%, which may be the reason why 2.0T can become a "large discharge" in the domestic market at present. 2.0L-2.5L displacement tax is 6 1%, and 2.5L-3.0L displacement tax is 66%. Seeing this, I believe everyone can guess why luxury flagships such as Mercedes-Benz S-Class and Audi A8L abandoned the previous 6.0L? V 12 to push 3.0T? Six cylinders.

3.0-4.0L displacement can be said to be a "big hurdle" of the displacement tax, because once it breaks through 3.0L, the displacement tax will reach an astonishing 96%, which means that buying a car with a displacement of 3.0L-4.0L is almost enough to buy another car. Speaking of which, I really want to boast about the 3.7L I carried a few years ago. Finidi Q50 with VQ37 engine, because almost half of its 400,000 price has to be "taxed". At the same time, those models of the same class with displacement stuck at 3.0L and 3.0T will be "smart" and save 33% of the cost!

So can small displacement supercharging be completely defined as the product of exploiting policy loopholes? It can be said that, after all, China is the largest market in the world. If manufacturers want to beat their competitors, of course, they can't raise their prices too high because of the emission tax. Camry did not launch its 3.5L, which sold well in North America and Australia. V6 Power Edition, that must be the reason.

So these 2.0T, 1.5T small superchargers are useless? Not exactly. There are many criticisms. Finally, let's "flatter" it. Although the displacement base is small, the current small-displacement supercharging is not the short-lived small-displacement supercharging. With the addition of mixed injection, double cycle, double scroll, advanced gearbox matching and other technologies and settings, the common problems such as turbine mutation and hysteresis have been further improved. The third generation development of Volkswagen EA888 is a good example.

In order to further improve power and fuel economy, Nissan also developed the world's first 2.0T variable compression ratio. Therefore, the current small-displacement supercharging has also been blessed by countless "black technologies". So since we can't change the policy, we'd better learn to adapt.

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This article comes from car home, the author of the car manufacturer, and does not represent car home's position.