There are six models of the Audi TT: a coupe and roadster each with three engines. Leather upholstery, a CD audio system, and HomeLink are among the standard features, along with 17-inch wheels and Xenon high-intensity discharge headlamps with automatic adjustment. The 180-horsepower 1.8 T Coupe and Roadster come with an intercooled turbocharged inline four-cylinder engine, front-wheel drive and Tiptronic six-speed automatic transmission. The 225-horsepower 1.8 T Coupe and Roadster offer more power and feature the proven quattro all-wheel-drive system and a six-speed manual gearbox. The 250-horsepower 3.2 Coupe and Roadster come with a new 3.2-liter compact V6 engine, quattro all-wheel drive and the new six-speed transmission Audi calls DSG, for Direct Shift Gearbox.The Audi TT is a carryover from 2005.