Audi A4

Even in the UK, the formula has its fans, which is why last year's championship winner, Audi, is launching a special edition to celebrate its success - and Auto Express has driven it first.

Unfortunately, there is no race-bred V8 under the bonnet of the A4 DTM Edition - this car is based on the 2.0-litre turbocharged FSI quattro. Still, careful tuning has pushed power from 197bhp to 217bhp, enough to shave a third-of-a-second off the 0-60mph time, dropping it to 6.9 seconds. Top speed is now 152mph, while hauling the DTM to a stop are new ventilated and cross-drilled front disc brakes.

The performance is complemented by a muscular bodykit. Up front, there is a restyled bumper with more air intakes and a carbon fibre chin spoiler. Multi-spoke 18-inch alloys replace the standard model's 16-inch wheels, while a competition-inspired diffuser and larger twin exhaust pipes feature at the rear. The effect is certainly distinctive, but it might be a bit too showy for some.

Inside, the motorsport theme continues, with figure-hugging Recaro seats, a three-spoke steering wheel clad in leather and suede, lashings of silver stitching and carbon fibre trim. The DTM uses the A4's S line sports suspension pack, but it features unique spring and damper settings. While the ride is stiffer, it is not uncomfortable and the changes combine with the quattro four-wheel-drive system to give plenty of grip.

The DTM is a lot of fun - particularly as the latest A4s feature much sharper steering than previous models. As for the engine, the 2.0-litre turbo unit has always been refined and gutsy, while the extra 20bhp means it is even more responsive. A positive six-speed manual gearbox further adds to the enjoyment.

Predictably, all this comes at a price. While the standard 2.0T FSI quattro costs ΂£23,715, the DTM weighs in some ΂£6,265 more at ΂£29,980. We would find it hard to justify paying that much extra when the standard model is about as well equipped and nearly as capable. That said, as only 250 DTM models will be made available, Audi should have no problem finding buyers.