Unveiled at the 2023 Monterey Car Week in California, the new GT has been comprehensively re-engineered in a programme that has seen its development twinned with that of the latest SL, alongside which it will be produced at the Mercedes-Benz's factory in Bremen, Germany.
As with the closely related SL, the GT adopts a fully-variable four-wheel drive system as standard for the first time. It replaces the rear-wheel drive arrangement used previously, providing the new coupé with what Schiebe describes as “a much broader spread of driving characteristics, together with greater traction and added security in all weather conditions”.
The fifth series-production road car to be developed ground-up by AMG will initially be sold in a choice of two guises - both featuring the company's hand-assembled, twin-turbocharged 4.0-litre V8 petrol engine. The new GT 55 4Matic+ develops 469bhp and 516lb ft of torque, with the range-topping GT 63 4Matic+ offering 577bhp and 590lb ft - both upgrades over the equivalent versions of the first-gen GT.
The updated engine, which Schiebe says will be made compliant with Euro 7 emission compliance when required, operates in combination with a nine-speed AMG Speedshift automatic gearbox featuring a wet “starter” clutch in place of a conventional torque converter. Mounted directly to the end of the reworked V8, it replaces the earlier GT's seven-speed dual-clutch transaxle unit, which was sited within the rear axle assembly. Also included is an electronically-controlled rear-locking differential.
Despite differing specifications, Mercedes-AMG quotes the same 1970kg kerb weight for both of its new GT models. The 55 claims an official 0-62mph time of 3.9sec and a 183mph top speed, while the 63 offers a respective 3.2sec and 196mph, it says.