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AMG has updated its GLE and GLS SUVs with its new flat-plane crank V8

Mercedes-AMG has updated its GLE 63 S and GLS 63 SUVs with a new 4.0-litre twin-turbo V8 featuring a flat-plane crankshaft, delivering 603 horsepower. The models now promise 0-60 mph in under four seconds and a top speed of 174 mph. Styling, suspension, and tech have also been refreshed, with U.S. arrivals expected in fall 2026. The powertrain retains the V8 formula but introduces mild-hybrid support for improved efficiency.

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What changed

The 2027 GLE 63 S and GLS 63 now use a reengineered V8 with a flat-plane crankshaft, mild-hybrid system, and revised styling, suspension, and tech, while maintaining 603 horsepower and aggressive performance claims.

Live updates

  1. Mercedes-AMG GLE/GLS SUVs Get 603-HP Flat-Plane V8, Faster and Louder

    Mercedes-AMG has updated its GLE 63 S and GLS 63 SUVs with a new 4.0-litre twin-turbo V8 featuring a flat-plane crankshaft, delivering 603 horsepower. The models now promise 0-60 mph in under four seconds and a top speed of 174 mph. Styling, suspension, and tech have also been refreshed, with U.S. arrivals expected in fall 2026. The powertrain retains the V8 formula but introduces mild-hybrid support for improved efficiency.

    What's confirmed:

    • The 2027 Mercedes-AMG GLE 63 S and GLS 63 feature a new 4.0-litre twin-turbo V8 engine with a flat-plane crankshaft, designated M177 EVO, and a 48-volt mild-hybrid system.
    • The updated models produce 603 horsepower, matching the output of the outgoing engine, with a 0-60 mph time under four seconds and a top speed of 174 mph.
    • The GLE 63 S and GLS 63 retain their V8-powered identity but incorporate mechanical improvements for better responsiveness and efficiency.
    • Styling updates include larger grilles and a more characterful exhaust, while the interior balances big screens with physical controls.
    • Adaptive suspension with active roll stabilization is now standard on both models.
    • U.S. dealership deliveries for the 2027 GLE 63 S and GLS 63 are scheduled for fall 2026.

    Still unconfirmed:

    • The new V8 may feature subtle refinements in sound or throttle response compared to the previous generation, though specific details remain unconfirmed.
    • Customization options for the exterior and interior have been expanded, but no official list of available choices has been released.
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