Most cars built anywhere have parts sourced internationally and then finished at one plant or another. This is a link kind of detailing how much of a car is sourced from the US.

VW has had some issues with Ignition Coils and the like, but most of their issues come from complex German engineering being put together by underpaid workers. That being said, they do have an “average” reliability score, so they’re not terrible, though the repairs tend to be costly because, again, complex German engineering.