What is the difference between the Audi TT variants?

The TT is the base model with a 2.0L four-cylinder engine; the TTS is a more powerful version of the same engine with upgraded suspension and brakes; and the TTRS is the ultimate performance version featuring a unique 2.5L five-cylinder turbocharged engine and more aggressive styling. For buyers considering the Audi TT, that matters because it affects how easy the car is to live with, whether for commuting, family use, long-distance driving or ownership costs. The useful way to read this is not as an isolated specification, but as a clue to how the car will feel in real daily use.