The 50 Worst Cars of All Time

1981 Cadillac Fleetwood V-8-6-4

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These days, cylinder deactivation, or variable displacement, is relatively common — the 2008 Honda Accord V6 has it, for instance. And it's a beautiful idea. When the engine is running at light loads, it's logical to shut down unneeded cylinders to save fuel, like turning off lights in unused rooms. But in 1981, when semiconductors and on-board computers were still in their infancy, variable displacement was a huge technical challenge. GM deserves credit for trying, but the V-8-6-4 was the Titanic of engine programs. The cars jerked, bucked, stalled, made rude noises and generally misbehaved until wild-eyed owners took the cars to have the system disconnected. For some it was the last time they ever saw the inside of a Cadillac dealership.

1899-1939

From the Horsey Horseless to the Model T and the Airflow, ten horror stories from the auto industry's earliest days

1940-1959

From the Crosley Hotshot to the Dauphine and the King Midget, ten auto blunders from the '40s and '50s

1960-1974

From the Amphicar to the Pinto and the Gremlin, ten colossal car mistakes from the Vietnam era

1975-1989

From the Trabant to the Lagonda and the De Lorean, the worst cars of the 1980s

1990-Present

From the Prowler to the Explorer and the GM EV1, the worst cars from the past 17 years