Mercedes AMG C 63 2015The new Mercedes-AMG C 63 has been revealed, boasting a new biturbo V8, a two-power, two-model range line-up and a new name to bring it in line with the Mercedes-AMG GT supercar. 

So it’s bye bye, 6.3-litre Mercedes-Benz C 63 AMG, hello 4.0-litre Mercedes-AMG C 63.

The new C 63, which debuts at the Paris Motor Show 2014, comes in two versions. The base model boasts 476hp and 479lb ft of torque; the new Mercedes-AMG C 63 S variant pushes this up to 510hp and 516lb ft of torque. In contrast to the peaky old non-turbo 6.3-litre V8, the new 4.0-litre biturbo V8 (codenamed M177) produces peak pulling power between a huge 1750-4500rpm range.

Acceleration is thus potent. The fastest C 63 S saloon does 0-62mph in 4.0 seconds; the standard C 63 takes just 0.1 seconds more. The Mercedes-AMG C 63 range is also offered in estate guise, which again takes just 0.1 seconds longer to reach 62mph than the comparable saloon. All models are restricted to 155mph; we’d say there’s at least another 25mph in them.

Traditionalists may mourn the loss of the 6.3-litre V8 but environmentalists won’t; economy of the new (and still hand built) 4.0-litre is vastly improved and it can now average up to 34.5mpg and emit as little as 192g/km CO2. No version exceeds the 200g/km CO2 barrier.

Despite the all-new engine, Mercedes-AMG hasn’t replaced the outgoing car’s seven-speed AMG Speedshift MCT 7-speed gearbox though (a rare example of something carrying over from the old car). Rather, it’s upgraded it to significantly improve shift time and response.

Mercedes-AMG C 63: how to spot it

The Mercedes-AMG C 63 is, like most other AMG machines, rather standout. The trademark twin-powerdome bonnet is here, in between bespoke and broader front wings and a new front bumper with AMG grille. In case anyone doesn’t know AMG is synonymous with the V8 engine, new ‘V8 biturbo’ badges are fitted to the front wings.

At the rear, there’s again a new bumper that swallows four exhausts, while both saloon and estate get small wings on their bootlids.

Inside, it looks fantastic. AMG bucket seats look enveloping and the tiny AMG flat-bottom steering wheel is present. Dials are recalibrated and given an AMG makeover, while the dash gets both AMG badging and a bespoke IWC timepiece. No tiny AMG gearlever here though: instead, the Touchpad dominates, with AMG Ride Control, AMG performance exhaust and three-stage gearbox controls dotted around it.

Mercedes-AMG C 63: under the skin

The new C 63 is not all about the engine; the suspension is also bespoke. Four-link suspension is fitted at the front, with independent steering knuckles and a wider track (you probably guessed that from the bulging wheelarches…). The multilink rear is attached to independent mounts and has its negative camber increased.

Standard AMG Ride Control three-stage electronic dampers are fitted, boasting comfort at one end and track at the other. The car also has a bespoke electromechanical steering setup (no electric EPAS system here!).

Steering response is further improved, says Mercedes-AMG, by the new dynamic engine mounts. Similar to those first introduced by Porsche on the 911, they soften during normal use but quickly stiffen in dynamic situations, both sharpening steering and reducing unwanted shimmy through the drivetrain.

The regular Mercedes-AMG C 63 has a mechanical locking rear differential; the C 63 S upgrades this to an electronic locking diff.

UK prices and specs for the single most popular AMG model ever will be confirmed next month following the Mercedes-AMG C 63’s debut at the Paris Motor Show 2014. Mercedes-Benz UK says ordering will open in October and deliveries will begin in spring 2015.