The electric Mercedes-AMG GT 63 4-Door Coupé has delivered a charging peak above 630 kW during a manufacturer-organised demonstration, exceeding its published 600 kW specification. Journalists who drove the car at Spain's Ascari circuit reported the result in first-drive articles published on November 5, 2026. The new evidence concerns charging and driving behaviour, not a fresh model launch: AMG originally unveiled the car in May.
Ars Technica witnessed a peak of 637 kW. Its account describes the battery rising from 17 to 80 percent in roughly ten minutes, with charging power still around 400 kW at a 60-percent state of charge and 252 kW at 79 percent. Road & Track separately reported seeing a peak beyond 630 kW at the same event. These are observations made during a controlled manufacturer presentation, not results from an independent laboratory charging test.
That distinction matters. AMG's official figure is 600 kW, and it claims an 11-minute charge from 10 to 80 percent. The witnessed session covered 17 to 80 percent, which is not an equivalent test window. The demonstration also relied on charging equipment provided for the media programme, so it says little about how often owners will find comparable power at public chargers.
The car's 800-volt electrical system is built around a 106-kWh battery using electrically nonconductive liquid for direct cell cooling. AMG has linked this thermal-management approach to fast charging and to repeatable power delivery on a circuit. Three YASA axial-flux motors, two at the rear and one at the front, produce a manufacturer-rated peak of 860 kW. Boost mode allows that output for up to 63 seconds; lower continuous-output figures apply outside the maximum-performance setting.
There is an unusual software element, too. AMGFORCE Sport+ recreates the sound and sensation of a V8, including vibrations transmitted through the seats and a simulated seven-speed transmission controlled by paddles. First-drive reviewers found the effect persuasive, although it remains a simulation layered over a purely electric drivetrain.
The November drive reports add observed behaviour to the figures AMG published in May. They establish that an instrumented media demonstration exceeded the nominal charging rating, but public-station repeatability, long-term charging performance and independently measured full charging curves are still separate questions.