Audi A6 Avant.

The Audi A6 is an executive car produced by the German automaker Audi. It is available in saloon and estate (Avant) body styles. The second and third generation A6 were also used as the basis for the allroad quattro.

On Top Gear, the A6 was seen in Series 4, Episode 3 and Series 10, Episode 8. The Avant version was seen in Series 7, Episode 3.