source: Audi Sport New Audi RS 5 DTM on track for the first time Two-liter four-cylinder turbo engine with some 600 horsepower Nico Müller, René Rast and Mike Rockenfeller thrilled after initial test For Nico Müller, René Rast and Mike Rockenfeller, Christmas came a little earlier this year: On the racetrack at Estoril, Portugal, the three Audi drivers had their first opportunity to test the new Audi RS 5 DTM, ringing in the turbo era of the DTM. All three climbed o...