Audi TTS Roadster Concept
The Audi TT has been produced in two generations. Both generations have been available in two car body styles; as a 2+2 Coupé, or two-seater Roadster. They have been built on consecutive generations of the Volkswagen Group A platform, starting with the A4. As a result of this platform-sharing, the Audi TT has identical powertrain and suspension layouts as its related platform-mates.
Source: Wikipedia, 2011