With a mostly four-cylinder lineup, the 2012 Audi TT has gas mileage that's better than most sporty cars--as well as nearly all sports cars.
According to the U.S. Environmental Protection Agency (EPA), the 2012 TT is rated at 22 miles per gallon in the city and 31 miles per gallon on the highway. And it's impressive that the automaker has managed those numbers whether you get the TT or the higher-power TTS (with 54 more hp). Both the TT and TTS are now only offered with the six-speed DSG automated gearbox.
Upgrading to the new 2012 TT RS lowers your mileage somewhat, though this model's 360 hp don't cost as much as you might think: EPA ratings for the RS are 18/25 mpg, and if you have a lot of restraint and keep off the loads of addictive turbo boost you might be able to manage even better.