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Unlike the Italians, Germans are more eloquent in their art of disguise. This, particularly in the way their performance cars are made. Ferraris and Lamborghinis scream supercar with their vivid, attention catching colours, while the Merc AMGs, BMW Ms and Audi RSes are quick to have you mistake them for just another motoring staple. And here, we may have another example of a wolf in sheep's skin.

On the outside, nothing quite separate this A6 Avant from its tamer siblings. The usual suspects are absent - no range-topping 'RS' kit or badge.

What it has though, are adequately sporty S-line dressings.

And a set of 20-inch rims - which does not look overtly large in those wheel arches.

Here comes the exciting part. A 3.0-litre bi-turbo V6 diesel engine, giving the A6 Avant enough power to dish out the century sprint in 5.3 seconds. That's about just half a second slower than the RS4. Then there's the chunky 650Nm of torque, which makes driving in our urban landscape a breeze.

The Avant (Audi's speak for wagon) has become an icon in the world of automotive shapes. And we reckon it just adds to the uniqueness of the car's overall preposition.