Jaguar XJ220
Jaguar isn’t a company that’s known for its supercars, but the company sold one in the 1990s. The XJ220 was a rare supercar that was owned by some of the world’s most elite celebrities. Elton John owned one for instance, and Jay Leno currently owns one now. The XJ220 utilized a distinct turbocharged engine developed by Jaguar for rally racing. Sadly the rest of the car was pretty lackluster and the high price tag didn’t justify what you got (via Jalopnik).
Most enthusiasts who are into supercars just pass on the XJ220 because it doesn’t have the pedigree of some of its rivals. The car was lacking in a lot of areas where the competition wasn’t. Jaguar exited the supercar business shortly after the XJ220 and the company hasn’t offered another supercar since.