It's not like the US has a monopoly on bad quality. Renault, Fiat, and Peugeot have all been forced out of the US because their cars were terrible compared to an equally equipped Japanese car. Mercedes-Benz and BMW coasted on their cachet while everyone was in agreement they broke just as often as any other car, but with parts that cost 3x ($$) as much and could only be repaired at specific shops ($$$). Mercedes-Benz was particularly notorious for going a bit gadget crazy in the early 2000s. Random things, like the windows not working because the ECU was out of memory, would break and require an overnight shipment from Stutgart.

Also, there is no 30-day warranty in the US. It's a minimum of 1 year on parts and labor. 30 days is the legal amount of time you have to return a defective item to the store for a full refund (doesn't apply to EOL/clearance items which have been severely discounted to account for the loss of warranty).

Also, as I learned the hard way recently, this 2-year EU warranty isn't in effect everywhere and the process to get compensation usually gets you lots of runaround.