Frankfurt motor show 2007 - Audi RS6

Also on Audi's stand is the RS6, the second generation of the car and the most powerful Audi yet.

The car is powered by a 571bhp 5.2-litre V10 twin-turbo petrol engine. It accelerates from 0-62mph (100kph) in 4.6 seconds and hits 125mph (200kph) in 14.9 seconds.

The engine is linked to a six-speed tiptronic gearbox.

Stopping power is provided by 19-inch steel brakes as standard, although a more efficient ceramic system is available for buyers who opt for 20-inch wheels.

Ride, grip and handling are enhanced by permanent four-wheel drive, electronic stability control and sports suspension with Dynamic Ride Control, the damping system that was introduced on the RS4.

Buyers also have the option of an additional three-stage damping system that allows the driver to change the suspension set-up according to the road conditions and his or her driving style.

Standard equipment includes heated front and rear seats, a tyre pressure monitor and a parking warning system. It has 1660 litres of luggage space.

The UK will get Avant models next March, with the saloon version following after. Prices will start at around £75,000.