It is a more normal way around these sorts of tariffs to import a vehicle as a kit of parts (CKD / "Complete knocked down"), and perform some level of final assembly in the end country. The sort of rules you talk about apply then, you pay the car parts import rate on the kit, not the (presumably higher) rate for a complete car[1].
[1] Or otherwise avoid whatever other protectionist measures mean you can't just import a fully built car.