How many do you believe in the pseudoscience of the four rims that deceived the old driver?

With the development of the Internet, there are many rumors of drug owners on the forums of major car owners. These rumors sound reasonable, but careful scrutiny will reveal their true colors. So what rumors are even brought by old drivers?

First, manual transmission is definitely more fuel efficient than automatic transmission.

In fact, this rumor is all over the major auto forums. In fact, generally speaking, the fuel consumption of manual transmission and automatic transmission is not bad, because the fundamental reason why gasoline determines the fuel consumption of a car is not the gearbox, but the driving habits of people and the engine of the vehicle. For a simple example, if you drive an American muscle car, then both manual and automatic transmission are more fuel-efficient than domestic family cars. And for beginners, manual gear is not only not fuel efficient, but also more fuel efficient. The gearbox structure of automatic transmission is indeed more complicated than that of manual transmission. So in theory, the fuel consumption will be slightly higher, but this is relative, not absolute.

In the process of normal driving, we try to use economic speed. While avoiding the morning and evening rush hours. For example, go to work in the morning, leave half an hour early and choose a smoother route. Most importantly, don't rise sharply and fall slowly. This not only consumes more fuel, but also is the burden of vehicle machinery.

Second, the thicker the bumper, the better the safety.

The car is not a tank, and the thickness of the armored vehicle shell does not determine the safety of the vehicle. Now, in the design concept of the vehicle, the front engine room and trunk of the vehicle will be designed as soft structures. In the event of an impact, the front engine room and trunk will begin to collapse. Used to absorb impact. At the same time, the structure of the cockpit is more solid, which is used to ensure that people in the car will not be thrown out of the car when a collision occurs. Therefore, the stiffness of the bumper does not determine the safety of the vehicle.

For a simple example, tank soldiers need to wear tank caps when driving tanks. Because there are no parts to absorb kinetic energy in the event of collision and bump, it is easy for people to get in close contact with the inner wall of the tanker inside. When you are driving, there is no such thing. And the foldable front and rear cabins can protect people who have been hit. Modern vehicle safety measures are often very good, except Passat, of course. Passat's A-pillar is like paper. Even if a fairy drives a car, I'm afraid there will be an accident and blood. We mortals had better fasten our seat belts when driving. When buying a car, you can choose a model with a large number of airbags and comprehensive protection.

Third, high-grade gasoline is more fuel-efficient.

The grade of gasoline is determined by its own octane number. The higher the octane number of gasoline, the higher the label. Of course, there is not only octane in gasoline, but also something called isooctane. Different octane numbers determine the antiknock performance of gasoline. Generally, the content of isooctane in high-grade gasoline is high, so the antiknock performance is good. The cylinder of some vehicles is very long, in order to prevent gasoline from exploding due to the pressure generated by piston compression when it is injected into the cylinder. There will be a requirement for gasoline labeling. For vehicles, the most suitable gasoline is the best gasoline. High-grade gasoline will not save more fuel.

Generally speaking, if the engine with low compression ratio uses high-grade fuel. Then gasoline can't burn completely, and carbon deposits will form in the cylinder. In the long run, it will damage the vehicle engine.