Now in its fourth generation, the standard Audi RS4 is more potent than ever. Its 2.9-litre twin-turbo V6 produces 444bhp and 443lb ft, combined with its four-wheel drive quattro traction ...

As you’d expect, all four wheels in the B9 RS4 receive power via the usual quattro all-wheel-drive system, split mechanically 40:60 front-rear, although either axle can actively receive more ...