9: 1998 Chevy Lumina
The Lumina is perhaps the most recognizable failure of the nineties Chevrolet lineup. You’ve seen these cars just about everywhere, and they are generally in horrible shape. Aside from catastrophic paint peeling, reliability was lackluster. At this period in time, GM was moving onto the full-size SUV market, so the Lumina was an afterthought. This sedan was far outpaced by competition from Toyota and Honda; even the Ford Taurus was a better offering.

GM more than likely regrets building this sedan or at least not putting enough emphasis on quality. Because that lack of a reputation stuck with the company all the way up into the current generation. Chevrolet sedans just aren’t equated with a quality product, and the Lumina had a large part in that.