Use original parts?

Using substitutes saves money, but creates the risk of problems due to different fastening systems.

The concept of "soft" crumple zones and a "hard" interior used in modern vehicles means that body parts are designed to absorb kinetic energy as much as possible.

 

This avoids its impact on people inside the vehicle. Each of these parts meets strictly defined specifications and is made from the appropriate materials. The strategic body parts are made from ultra-high yield strength steels capable of absorbing 2,5 times more energy than conventional sheet steel. Along with steel, aluminum is used, which accumulates impact force well and is also resistant to corrosion.

For these reasons, original sheet metal parts should be used for repairs. The use of substitutes provides financial savings, but creates the risk of problems resulting from the use of different fastening systems. Using cheaper materials that absorb energy in a collision inefficiently is dangerous.