Porsche has billed its new 2017 GTE World Endurance Championship contender as the "biggest evolution" of the 911 in its history.The new 911 RSR, which was launched on Thursday at the LA Auto Show, has been developed around the face-lifted 991-shape version of the rear-engined sports car to take advantage...

The new 911 R features a six-cylinder flat engine with a displacement of four litres, familiar from the 911 GT3 RS. The racing engine delivers 500 hp at 8,250 rpm and generates 460 Nm at a speed of 6,250 rpm. The results are direct responsiveness and thrilling performance capabilities.

Porsche has unveiled the new 991-shape 911 GT3 racer that will come on stream for next season. The new 911 GT3 R, which replaces the exiting 997-model of the same nomenclature, was launched on Friday at the Nurburgring ahead of this weekend's 24 Hours at the German track.The car is...