2025 Mercedes-AMG GLC63 Reinvented as a 671-HP Plug-In Hybrid

• The 2025 Mercedes-AMG GLC63 drops the twin-turbo V-8 engine in favor of the hybrid setup from the C63 sedan.
  

• The turbocharged 2.0-liter four-cylinder and electric motor join forces to produce a massive 671 horsepower and 752 pound-feet of torque.

• The GLC63 is also a plug-in hybrid, with a 6.1-kWh battery that can send power to all four wheels.

Mercedes-Benz launched the second generation GLC-class for 2023 with crisp, clean styling and a turbocharged 2.0-liter four-cylinder with assistance from a 48-volt hybrid system. Now Mercedes is giving the GLC-class the AMG treatment, with the GLC43 acting as a stepping stone to the full-blown, high-performance GLC63 S E Performance. The GLC63 arrives for the 2025 model year and replaces the twin-turbo V-8 with a hybrid four-cylinder setup.

Under the hood, the 2025 Mercedes-AMG GLC63 packs the same powertrain as the latest AMG C63 sports sedan. The 469-hp M139 turbocharged 2.0-liter inline-four is mated to nine-speed wet-clutch transmission as well as a rear-mounted 201-hp electric motor that operates through a two-speed transmission and an electronically controlled limited-slip differential to send power to the rear wheels.

All told, the system pumps out a combined 671 horsepower and 752 pound-feet of torque, notable upgrades over the old V-8's 469 hp and 479 pound-feet. Mercedes estimates a 3.4 seconds sprint to 60 mph and an electronically limited top speed of 171 mph.

The turbocharger on the M139 engine features an electric motor on the shaft linking the compressor and turbine wheels that can spool up the turbo before the exhaust gases arrive, virtually eliminating turbo lag. The GLC63's turbo is significantly larger than the unit in the GLC43 and the integrated e-motor runs off of the 400-volt electrical architecture.