First drive: Audi A6 Avant

With the saloon on sale for just a few months, Audi has completed the A6 range with the addition of Avant estate versions due for launch in November, with the emphasis on being larger but lighter.

Audi expect the seventh generation A6 Avant to go right back to the top of the class, but can it split the BMW and Mercedes rivals? I headed to Cheltenham for an early UK drive.