Overview
The Mercedes-AMG GT 4-Door takes a hard turn towards the future for 2027, ditching gasoline completely and replacing it with a battery pack and trio of axial-flux electric motors. With two positioned on the rear axle and one on the front, they work together to deliver a peak 1153 horsepower in the GT63 variant; that’s 322 more ponies than the former GT63 S E Performance plug-in hybrid, which extracted 831 horsepower from its gas V-8 and single electric motor powertrain combo. The GT55 is good for a max of 802 horsepower.
Construction of the bodywork is also new, utilizing a blend of aluminum, steel, and fiber-reinforced composites with the aim of maintaining high rigidity and a low overall weight. But these are just the highlights, as the only thing that carries over from the old GT is its name and its four-passenger, four-door blueprint.
Expert Tip: With this much speed and power in the EV arena, the Mercedes GT 63 is lining up against EVs like the Porsche Taycan Turbo and Lucid Air Sapphire.
What’s New for 2027?
Everything but the GT name. We were a bit startled to see such radical change, but we’re here for it. You’ve got the three electric motors, a 600-kW max charging speed, a claimed 2.0-second 0-60 time, an electronically limited 186-mph top speed, the fierce new styling, and much, much more.
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Pricing and Which One to Buy
We’d be foolish to try and nail down pricing this early in the game, but the previous GT 4-door lineup started at approximately $104,00 and extended to over $208,000 for the GT63 S E Performance. We expect the new model to start somewhere in the middle of that spread and head north from there. We’ll update this section as soon as pricing is available.
EV Motor, Power, and Performance EV Motors: 805-hp triple motor, 1153-hp triple motor Drivetrain: all-wheel drive
Both the GT55 and GT63 use three axial motors of a lightweight, power-dense design that is just now becoming more common in automotive use. Note that the 1153- and 805-hp figures quoted above are peak output, available for short bursts like launch-control starts; continuous output is rated at 711- and 503-hp, respectively. Two electric motors reside at the rear axle and one at the front, each incorporated into a high-performance electric drive unit with an oil-cooled planetary gearset in the rear; the front motor works as a booster when additional traction or acceleration is required. It fully disconnects when not in use. Special attention is paid to the cooling of the motors.
Control of the drive system is provided by the AMG Race Engineer software accessed via rotary dials. The Response control allows the adjustment of throttle response, the Agility control affects torque distribution, and the Traction control provides nine stages of available tire slip. Active aerodynamics and rear-wheel steering contribute to the performance objectives. There’s also a synthetic soundtrack that utilizes over 1600 sound files designed to replicate the sound of a V-8 engine at full rip, complete with an exhaust burble effect. So far, we’ve been amused but not impressed by similar systems currently in use on other cars. We’ll have a full report on how it sounds as soon as we get behind the wheel.
0–60-MPH Times Claimed 60-mph Time: 2.0 seconds (GT 63), 2.4 seconds (GT 55)
In Comparison: The Mercedes-AMG GT 63’s claimed 2.0-second time puts it right in league with the Porsche Taycan Turbo GT Weissach, which achieved a 1.9-second time in C/D testing. We often beat manufacturer performance claims, so we’ll see how the GT does when we get one to our test track.
Additional ResearchRange, Charging, and Battery Life Claimed EV Range: 310-400 miles
Preliminary data indicate the GT55 and GT63 will be capable of between 310 and 400 miles of range. Those early estimates are based on the routinely optimistic European WLTP schedule; we’ll update this section with official EPA estimates as soon as more substantial data becomes available.
The center-mounted 800-volt, 106-kW lithium-ion battery utilizes an NCMA (Nickel/Cobalt/Manganese/Aluminum) based chemistry and is housed in a structurally stressed case. Mercedes-AMG claims the 600-kW charging rate can take the battery from 10-80 percent in as little as eleven minutes when connected to an appropriately speedy DC charger. A/C charging is limited to 11 kW. U.S. market cars will use the NACS plug, while European and British cars will use CSS2.
As more information becomes available, we’ll update this story with more details about: Fuel Economy and Real-World MPGe Infotainment and Connectivity Safety and Driver-Assistance Features Warranty and Maintenance Coverage C/D Test Results and Specs