4: Audi TT RS
The Audi TT is perhaps one of the most underrated sports cars still on the market. You’ve seen them in one form or another for decades. Traditionally, people that own these cars are long-term owners who tend to hold onto their vehicles. Performance-wise, the TT is an exhilarating vehicle with a lot going for it. The style has stayed the same for decades, but that also leads to a problem.

Other sports cars on the market have been updated and provide a better value overall. Sure, you get the joy of driving a TT, but you also have the drawbacks of an aged platform. The TT is expected to be redesigned soon, and the next generation will build on what makes the platform great. For now, the TT is worth avoiding just because of the aged platform and lack of refinement.