#29: Cadillac Seville
Price: $6,988
The Cadillac Seville, in production from 1975 to 2004, was one of the least successful Cadillacs despite its affordability. Its smaller size, inferior quality control, and costly V-8-6-4 engine contributed to its disappointing market performance.
The Seville’s notorious quality control issues meant it often deteriorated quickly after purchase, leading to poor sales. The model’s extended production life remains puzzling, especially as consumers quickly learned to avoid this underwhelming vehicle.