The first design sketch of Audi's new four-door coupe, the A7, has been revealed.

The sketch was "leaked" to the British "Car" magazine by an insider of Audi. A7 will be equipped with a series of V6 and V8 engines, while the high-performance V10 engine will be reserved for S and RS sport versions. The price of A7 will be lower than that of the flagship A8, but the new cabriolet version will become the most expensive model in Audi's history.