The advantage of rubber as the front of the car is its good elasticity, which can resist low-speed collision well, and it hardly needs shaping after collision, which can make up for the shortage of bumper cars.

But the elasticity of rubber is greater than hardness, and the yield strength is too low. Too low or too high yield strength will reduce the energy absorption effect, and the impact energy absorption effect of rubber is worse than that of engineering plastics and steel plates with the same shape and weight. In this way, using rubber as the front will only increase the weight and will not reduce the safety factor.

In addition, high temperature will greatly accelerate the aging of rubber, and the engine room temperature is very high, especially for turbines, so the front of the car is almost always made of high-temperature resistant rubber. It is even more impossible to use a lot of rubber for body panels. Even if safety issues are ignored, ultraviolet rays will greatly accelerate the aging of rubber. The cost of anti-ultraviolet rubber is too high, rubber is not easy to be molded, and it is not easy to be used for painting body panels.

Therefore, for the sake of large-scale manufacturing and safety, the front of the car is made of engineering plastics and steel plates, and rubber will not be used.