Exmoor’s hills shouldn’t pose much of a challenge to McLaren’s ballyhooed new GT – but the latest Porsche 911 Turbo S just might. We put the 1250bhp pair to the test
Special-edition Performante dominates every environment it moves through, mainly because of its naturally aspirated 5.2-litre V10, which is louder than even the 6.5-litre V12 in the Aventador
