Audi has created a wild 496bhp version of its entry-level A1 to celebrate the 30th anniversary of the Wörthersee festival, held in Reifnitz, Austria for Audi, Seat, Skoda and Volkswagen fans.
Called the Audi A1 clubsport quattro, the one-off show car gains a heavy dose of rally car-inspired styling that is said to preview the appearance of a hot new four-wheel drive S1 quattro model that is being developed by Audi as a rival to the likes of the Renaultsport Clio.
At the heart of the new hatchback is a heavily tweaked version of Audi's turbocharged 2.5-litre five-cylinder powerplant, shoehorned transversely into the A1's compact engine bay.
In standard guise, as seen in the Audi TT-RS and Audi RS3, the direct-injection unit delivers a sturdy 330bhp — or 148bhp more than the most powerful production version of the A1 up to now, the 182bhp turbocharged 1.4-litre four-cylinder 1.4TFSI.
But for the A1 clubsport quattro, the five-cylinder engine gains added boost pressure, a larger intercooler and a redesigned exhaust, among other unspecified modifications that see output rise by 166bhp to a supercar-like 496bhp; enough to endow the 1390kg hatchback with a power-to-weight ratio of 356.8bhp/tonne, no less.
Torque has also risen by a substantial 229lb ft — or 47 per cent — over the standard unit, peaking at 487lb ft between 2500 and 5300rpm.
Drive is delivered to all four wheels via a six-speed manual gearbox and a modified version of the TT RS's multi-plate clutch, Haldex-style four-wheel drive system - a set-up that is already earmarked to appear on the A1 quattro and tested by Autocar earlier this year.
Although Audi is quick to play down the relevance of the A1 clubsport quattro's engine to the rest of the A1 line-up, there's no denying its potency in a car of such compact dimensions. Factory claims put its 0-62mph time at just 3.7sec, making it faster up the strip than all of its existing production cars, bar the 560bhp naturally aspirated 5.2-litre V10-powered R8 V10, which boasts an official time of 3.6sec.
Audi also says the extreme hatchback will hit 124mph in 10.9sec and accelerate from 50 to 75mph in fourth gear in just 2.4sec. About the only disappointing thing about the A1 clubsport quattro's overall performance is its top speed, which is limited to 155mph.
While details of the the production version S1 quattro are yet to be revealed, Ingolstadt based sources suggest it will be a significantly milder machine. Nothing's official just yet but rumours suggest it will run the same 210bhp turbocharged 2.0-litre four-cylinder engine found in a variety of Volkswagen Group offerings, including the Golf GTI.