That said, they were and are made to a different design ethos - American cars have never been designed for balanced performance like German cars have, they instead have been designed for comfort and trouble-free operation (meaning next to no maintenance). America long made the only car in the world that could go 100,000 miles with nothing but fluid changes, and other wear items. No European car can really do that, all of the German makes have a pretty aggressive preventative maintenance schedule.
Japan to an extent does build cars to the american ethos - they build to the American ethos, but localized to the Japanese market to a greater or lesser extent -but then again they were taught car building by the Americans after WWII - which is I think why Japanese cars have been so successful in the American market.
Europe caught up, but the USA didn't stop, and now Europe is behind again.
And they were correct. Mercedes Benz and BMW did eventually catch up to the Americans. Nowadays, many people would argue that Mercedes Benz and BMW represent a level of quality that is much higher than what you can get from American automobiles.
If Europe hasn't yet caught up to the USA in consumer electronics, perhaps that is because Europe hasn't yet made the concerted effort to catch up.