25. 1975 Autobianchi A112 Abarth

Notable Features: 1,050 cc engine that produces 70 hp; the vehicle only weighs 1,540 lbs.

Complex Says: You may be looking at this little hatchback and wondering why it's on this list. From the factory, it was quick and had excellent handling. With a few key modifications, you could beat established rally champion cars with it. It's a total sleeper car -- unless you know its potential.