AUDI is to complete its S quattro series line-up with the unveiling of the new S6 quattro which is due to make its debut at the Frankfurt Motor Show next month. It joins a line-up which already includes the S3 quattro, S4 quattro and S8 quattro.

Price is yet to be announced for the S6, which is to be powered by a modified 340bhp 4.2-litre V8 engine producing 310 lb-ft of torque at 3,400rpm and achieving 0-62mph in 6.7secs.