5. Marcos TSO
Outside of Great Britain, Marcos was a little-known sports car manufacturer. But on the domestic market, it had a reputation for building fast, relatively affordable sports coupes. Always considered a kit car company, Marcos used engines and drivetrain components from other brands.
In 2004, Marcos presented the TSO, a cool-looking coupe powered by a Chevrolet LS1 V8 engine delivering 400 HP to the rear wheels. Despite its great looks, brutal performance, and aggressive marketing, the company managed to sell just a handful of them before disappearing from the market in 2007.