Distinguished from other recently introduced new S-class models by a number of traditional AMG styling tweaks, including a deep new front bumper, heavily chromed blade grille, 'twin-turbo V8' badges along its flanks and beefed up sills among other changes, the new S63 AMG is planned to go on sale in the UK in rear-wheel drive guise only next year at a price of around £120,000.
Building on initiatives taken with the standard S-class, the performance variant of the big Mercedes-Benz saloon benefits from a further range of weight saving measures, including the adoption of a 78Ah lithium-ion battery and a spare wheel recess made of carbonfibre.
In long wheelbase guise, as sold in the UK, the new rear-wheel drive S63 AMG is said to weigh 1995kg – 100kg less than its predecessor, despite a moderate increase in dimensions and greater level of standard equipment. Significantly, Mercedes-Benz claims the four-wheel drive S63 AMG hits the scales at the very same figure of 1995kg, owing in part to a more straightforward suspension design.
Power comes from a reworked version of AMG’s twin-turbocharged 5.5-litre V8 engine that in a departure to recent AMG practice is planned to be offered in just a single state of tune. It develops an added 14bhp over the old S63 AMG with performance package at 577bhp, providing the new car with a power-to-weight ratio of 289bhp per tonne. Torque matches that of proceeding model’s performance package option with a sturdy 663lb ft developed on band of revs between 2250 and 3750rpm.
The direct-injection petrol unit already meets stringent EU6 emission regulations, with combined fuel consumption of 28mpg and average CO2 emissions of 237g/km in the rear-wheel-drive long wheelbase model destined for the UK. The added reserves continued to be channelled through AMG’s seven-speed MCT (multi clutch transmission) with three driving modes: Controlled Efficiency, Sport and Manual – the former of which brings an automatic stop/start function for added fuel savings.