After a Petrol Car part is damaged, is it better to repair it or replace it?

For all Petrol Car parts that can be replaced individually, replacement is better than repair in most cases. For Petrol Car parts that cannot be replaced individually, whether they need to be replaced depends on the degree of deformation and whether they can be repaired. Do not replace them easily. What are Petrol Car accessories that can be replaced individually? They are not an integral part of the car body. They are installed on the car body. They are all Petrol Car accessories that can be replaced individually. Things that are frequently replaced in accidents include front and rear bumpers, front fenders, doors, engine hoods, water tanks, etc.

On the contrary, Roewe Car accessories are integrated with the body and cannot be replaced individually. To replace them, the entire body must be replaced, which is obviously not replaceable. The repair method is cutting and welding. If this area is seriously deformed, cut off the severely deformed area, then cut a piece from the same part of the new body and weld it on the accident car. The most damaged items in the accident were the rear fenders, lower door sills, B-pillars, and upper door frames. These places are deformed. If they need to be replaced, the deformed parts are cut out and the same parts are cut and welded from the new body. This new body that was cut is not a whole body, but an entire side of the body. It is very long and large from front to back. It includes all the places mentioned above and needs to be cut wherever it is needed.
From the repair methods, we can see that the cutting and welding method will damage the car. After welding, it is no longer an integral structure with the original car, and the strength of the body must be reduced. Therefore, if these areas are injured and the deformation is slight, even if it is the other party's responsibility and the other party pays for it, try not to replace it, just reshape and spray paint. If the deformation area is relatively large, the depth is relatively deep, or it is technically irreparable, it must be replaced. Because the deformation is too large, even if it is reshaped, the strength here will be reduced due to the large bending of the metal, and it may not be as good as replacement.
Parts that can be replaced individually do no harm to the car and can be replaced regardless of the size of the damage. But the premise is to replace original Roewe Car parts, and the quality of auxiliary factory parts cannot be guaranteed. Therefore, if you are covered by insurance or the other party's liability, go to a 4S shop to repair your car. At least they will have original Petrol Car parts. Strictly speaking, damage to components that can be replaced individually is not considered an accident vehicle, because the safety and other performance of the vehicle are not affected. A car is considered an accident only if parts are damaged that cannot be replaced individually, regardless of the size of the damage.
What is the method of repairing accidental sheet metal? By beating, pulling, and grinding. For large deformations, use a hammer first. For minor deformations, use pulling. For small unevenness and burrs, use grinding. Then spray paint, and put putty before spray painting. If too much putty is applied, the strength here will be very poor. If there is a slight collision, the putty will crack and the paint surface will explode. Therefore, plastic surgery is the key. If the plastic surgery is done well, the putty can be thinned out. Another thing you need to understand is that even if new exterior parts are replaced, the 4S shop will paint them themselves, and the original parts sent by the manufacturer will not come with paint. However, there is no need to apply putty when painting new parts. They already have good flatness and can be sprayed directly.