Audi’s hot new S7 is set to be powered by a new twin-turbo V8 engine, Autocar can reveal.
The new 4.0-litre engine is expected to produce around 550bhp in the S7 when it reaches showrooms next year.
The engine has been co-developed with Bentley and will also feature in the new Continental GT in 2012; both cars will be all-wheel drive.
The Audi S7, pictured here in these undisguised spy pictures, will get a whole host of styling changes over the standard A7 range it is based on.
These include larger alloys and brakes, a sportier front bumper with larger air intakes and quad exhaust pipes.
Audi is also planning an even more powerful RS7; this is expected to use an upgraded 580bhp version of the 5.2-litre V10 engine found in the R8 mated to Audi’s new seven-speed dual-clutch transmission.