AUDI S6 $170,716 The Lexus’s closest rival in price and performance. Twin-turbo 4.0-litre V8 with 331kW and quattro all-wheel drive. 0-100km/h in 4.4 secs. Mean thing. BMW M5 PURE $184,715 Even meaner but you have to cane it at the Nurburgring to appreciate it. Twin-turbo 4.4-litre V8 with 412kW. 0-100km/h in 4.3 secs. MERCEDES-AMG E63 Due early 2017 with 430kW-plus from AMG’s twin-turbo 4.0-litre V8 and allwheel drive. Should go close to breaking 4 seconds in the 0-100km/h sprint. Price as yet undisclosed.