Audi is working on a four-door coupe that will take on models from Mercedes, VW and Jaguar. The future A7, set to be launched in 2009 will be built on the new A6 lightweight aluminum platform.

Under the hood the company will place a based 2.8-liter V6 FSI or the new supercharged 3.0-liter V6. The RS7 version will be powered by a 5.0-liter twin-turbo V10 engine, while the S7 will use a detuned version.

Check out preview on the 2010 A7 in here.

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