The success of the ongoing Audi campaign to optimise economy and emissions has been underlined again by a What Car? Green Award for the A8 luxury saloon for the second year in succession.

The Audi A8 2.8 FSI, priced from £49,975 OTR, triumphed a second time in the face of even stiffer competition from established premium sector favourites and newly launched challengers vaunting diesel and petrol-electric hybrid power. It continues to undercut the vast majority of these alternatives on CO2, emits the lowest proportion of harmful oxides of nitrogen in the class and is also free of the particulates generated by diesel combustion, making it the most uncompromising choice for efficiency-aware drivers.