Divisions Audi Sport GmbH Founded 1909 Founder August Horch Headquarters Ingolstadt, Germany And the thing is – the success of the Quattro S1 wasn't limited to off-road competition. Audi ...

If your big Audi coupé or cabriolet is going to do without the red stripe of quattro GmbH before its badge then you’ll be looking at the 3.0-litre TDI quattro for the fastest against the clock.

In fact, until its recent rebranding as Audi Sport the brand’s high-performance skunkworks was called Quattro GmbH. Fast Audis are four-wheel drive: that’s a fact. Well, not quite, because the ...