21. Chevrolet Spectrum
The Spectrum, which was produced from 1985 to 1988, was another compact car Chevrolet rebadged and sold as its own. Designed by the famed Italian designer, Giorgetto Giugiaro, the Spectrum was, in fact, an Isuzu Gemini. Under the hood was a 1.5-liter four-cylinder producing 70 HP or a turbocharged version of the same engine that produced 111 HP.
The turbocharged engine brought more performance to otherwise ordinary Spectrum. However, after Chevrolet discontinued it, the Spectrum appeared as a Geo, another lost GM economy brand sold until 1990.