The tweaks aren’t just cosmetic, although the usual mid-life refresh items have received attention. They include different headlights, new 18” five-spoke alloy wheels, restyled bumper aprons and a revised radiator grille. The bonnet, which is now made from aluminium, sports more aggressive power domes.
But it’s under the skin that the biggest change has taken place. Gone is the previously-used automatic gearbox, replaced by an AMG Speedshift MCT seven-speed multi-clutch transmission. It features four modes - Controlled Efficiency, Sport, Sport+ and Manual - as well as a Race Start function.
The V8 engine (still 6.2 litres, despite the C 63 tag) is unchanged. Combined with that new gearbox, its 450 bhp (336 kW / 457 PS) is enough for a 0-62 mph (100 km/h) time of 4.5 seconds in the saloon, which is exactly the same as its predecessor. Similarly, top speed remains limited to 155 mph (250 km/h).
Fuel consumption does improve, though. The C 63 AMG saloon will now manage 23.5 mpg (12.0 l/100km) on the combined cycle, whereas before the figure was 21.1 mpg (13.4 l/100km).
Likewise CO2 emissions are better, dropping by over 10% to 280 g/km (288 g/km for the estate). Unfortunately that reduction won’t make much difference to UK buyers, as a C 63 AMG will still fall into the highest road tax band. That means an annual bill of £435 just to keep the thing on the road.
According to Mercedes-Benz, 30 per cent of all C 63 AMG buyers to date have specified AMG’s Performance Package Plus, so it’s no surprise that this option continues with the facelifted cars. As before, it raises power to 480 bhp (358 kW / 487 PS), reduces the 0-62 mph time by 0.1 of a second but leaves the top speed unchanged.
The revised C63 AMG models will make their public debut, together with the rest of the facelifted C-Class range, at March’s Geneva International Motor Show. Deliveries are expected to start in July 2011.
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