The Geo Metro was a rebadged Suzuki Swift, and came from Korea.
The Ford Festiva was a cheap German built American imitation of a cheap American built German car...
But my worst ever American honors has to come down to either the Chevette, Maverick or Citation (X-Body), but only because I have personal experience with all of those. Universally, they were all POSs.
But backed into a corner, I would have to go with the Chevette. I had an automatic. No power at all. Bought it used for fifty bucks, and I wuz ROBBED!