39: Ford Focus
If there was a car that became a surprising success for Ford in the 2000s, it was the Focus. The compact car was offered in three options: a sedan, a wagon, and a two-door hatchback. Consumers loved the styling of the car and its affordable price tag made it fly off of the dealership lots. But the reliability was not something Ford had factored into the design of the car (via Hot Cars).

The problem with the Focus was that the long-term reliability of the car was not that great. There were issues with the head gaskets and the transmission. Repairs for these cars are not cheap as there are many hard-to-reach parts. Ford is also not known for offering the best warranty plans.