Why do cars have front wheels instead of rear wheels?

Because the front is more fuel efficient, most cars use the front.

There are three main driving modes of automobiles: front drive, front and rear drive and four-wheel drive. Advantages and disadvantages are as follows:

Precursor: fuel economy, which is the most critical. After all, both the front drive and the rear drive need the transmission shaft to the rear wheel, which will lead to the loss of driving force, and the amount of oyster sauce is relatively large. Because the pre-drive is limited by the traction itself, even if the torque is increased, the acceleration performance has not been significantly improved; The disadvantage of the precursor is that the precursor is easy to turn understeer.

Front and rear drive: the front of the engine is transported to the rear through the transmission shaft. The obvious advantages are sensitive acceleration and steering, but it may lead to excessive steering (such as drift). Most BMW cars are front and rear drive. Therefore, the steering stability of BMW when cornering at high speed is essential (although it is easy to oversteer, the deviation of the center of gravity of the car body can only be suppressed by hard suspension, that is to say, the car body can remain stable and not easy to oversteer); The shortcomings have been said, and it is inevitable that there will be a little more oyster sauce at the same time.

Four-wheel drive: also known as all-wheel drive, it means that the front and rear wheels of the car have power. The output torque of the engine can be distributed to all the front and rear wheels in different proportions according to different road conditions, thus improving the driving ability of the car.