13. Chevrolet Cobalt SS
Although they discontinued it, most car fans will remember the Cobalt SS as one of the best and most powerful American compact cars. Available as a supercharged, turbocharged or naturally aspirated model, the best SS was the turbocharged 2.0-liter four-cylinder they introduced in 2008.
The engine delivered 260 HP, which was astonishing by the standards of the day and more than any of the competitors. Also, the Cobalt SS had big tuning potential, so it is easy to get even more power from this engine.