And for Volkswagens, they somewhat infamously don't keep the quality standards consistent. Volkswagen themselves practically draw attention to it, with the versions of their cars exclusively built in Germany. US manufacturers have had the problem too at times.
Toyota and Honda had that problem figured out before the 1980s were even over. They've been building cars without issue in the US for nearly 30 years. The only practical reason flagship models tend to be built in Japan is because of capacity concerns with US plants. Seriously, read up on NUMMI. It will tell you everything about how easily Toyota was able to adapt exacting Japanese quality tolerances to US built cars, as well as how much of a miserable failure GM's attempts at copying what Toyota trained GM's workers to do for their other plants.
10-15 years ago Toyota and Honda had already been producing cars in America for 10-15 years.