Odisaodi said:
@Sharp_Coyote: if most parts for cars are mass produced and interchangeable then unless you break something specific to that car it should be fine later on? I can't see common wear and tear being a problem because the parts would be easy to find

Nothing is interchangeable, not even so much within brands, anymore; hecc, not even within model lines anymore.
Everything is stylized, and proprietary.

Aftermarket parts are available for common, wearable items, sure, yet are rarely close to OE-quality, and are only made where there is a large demand. There are tons of aftermarket F150 or Mustang parts out there, yet Mercedes AMG GLA 45? not so much ...