4. Fiat X1/9
Behind this strange name lies one of the most interesting affordable sports cars of the ’70s. Fiat introduced the X1/9 in 1972. It was a small two-seater with a T-Top, mid-mounted engine, and two trunks, in the front and in the back. Think of it as Porsche Boxster, only 20 years older.
Despite fantastic looks and technical layout, the X 1/9 was underpowered with just around 60 HP from its small 1.3-liter four-cylinder engine. The performance was not impressive, so most owners decided to fit bigger engines. However, you can find them at bargain prices since they exported them to the U.S. but never really got popular there.