The engineers at Audi look to be hard at work on a more potent version of the company's A1 hatchback. Spy photographers spotted this machine out on public streets for testing, and the presence of a set of quad exhaust out back leads us to believe this could be the rumored S1 model. It's unclear whether this machine will slot under the limited-edition 256-horsepower A1 Quattro or be sold as a less extreme version of the hottest of Audi hatches when that car's production slots fill up. Photographe
German magazine Sport Auto got its mitts on an Audi A1 Quattro, then tested the limited-edition hot hatch for high speed and gravel prowess. With 252 horsepower and 258 pound-feet underhood from its 2.0 TSFI engine, it's slightly down on gumption from the 500-horsepower A1 Clubsport that Audi showed off at the Wörthersee and Le Mans last year, but the bewinged A1 Quattro will still get from standstill to 62 mph in 5.7 seven seconds and onto a GPS-indicated 257 kph (159 mph).