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New Mercedes-AMG GLC 63 S goes on sale with a whopping 671bhp

Mercedes brings turbocharged hybrid power to its performance SUV

Revealed back in the summer of 2023, the Mercedes-AMG GLC 63 S has now gone on sale in the UK prices from £121,820. It’s the second-generation of the high-performance mid-sized SUV and is more powerful than ever thanks to a hybrid setup taken from the Mercedes-AMG C 63 S super saloon. 

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The cheaper GLC 63 S is snappily named 4MATIC+ AMG Night Edition Premium Plus. It’s certainly well-equipped, although you’d hope so given the price tag which makes it almost £30,000 more expensive than the BMW X3 M Competition. As standard, the GLC 63 S gets 21-inch AMG wheels, a beefy AMG bodykit, a quad-tip exhaust system and a rear spoiler.

There’s also a panoramic sliding roof, wireless smartphone charging, a 360-degree camera, Mercedes’ ‘transparent bonnet’ tech, active parking assist and AMG Performance seats. Like the standard GLC there’s the latest MBUX infotainment system using an 11.9-inch portrait touchscreen display and a 12.3-inch digital instrument cluster behind the wheel. 

The GLC 63 S also comes in ‘AMG Edition 1’ guise at £130,820. For the extra outlay this version includes a graphite grey paint finish, yellow brake calipers, cross-spoke forged wheels, black and yellow contrasting stitching throughout the cabin along with yellow seat belts and bespoke floor mats. It also comes with an AMG indoor car cover.  

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Mercedes’ controversial decision to fit its smaller AMG models with a four-cylinder engine instead of a V8 extends to the GLC 63 S, although the unit is supremely powerful. Both of the trim levels of the GLC 63 S come with the same M139I four-cylinder engine. 

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The old car’s 4.0-litre V8 produced a respectable 503bhp, but the new model dwarfs this with 671bhp and 1,050Nm of torque. The powertrain consists of a 2.0-litre four-pot with an electronically-assisted turbocharger and a 6.1kWh battery sending power to a 200bhp e-motor with a twin-speed transmission and limited-slip differential. To maintain the lifespan of the electrical side of the powertrain, full power is limited to 10-second ‘boosts’. The hybrid power adds the ‘e Performance’ part to the lengthy GLC 63 S name. 

Whatever 63 S model you choose, the 0-62mph time stands at 3.5 seconds with a limited top speed of 155mph. 

The 63 S comes with an active anti-roll feature to modulate the anti-roll bars to maintain stability. The system uses a steel coil spring set up with adaptive dampers. The suspension of the 63 S is unique too with a wider track and a focus on delivering a performance-led drive. Big 390mm front brake discs are stopped by six-piston calipers with 370mm discs to the rear. 

Technically a plug-in hybrid, the GLC 63 S does feature a mode to run in electric-only power. Given the focus on power rather than EV efficiency of the battery, the small seven-mile range isn’t surprising. Mercedes claims an economy of 37.7mpg and CO2 emissions of 170g/km. 

The GLC 63 S name will again extend to the coupe-SUV variant which we expect will arrive in early 2024. Pricing for the sleeker coupe model is likely to eclipse the SUV’s.

Now read our review of the Mercedes-AMG GLC 63 S E Performance...

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Senior news reporter

A keen petrol-head, Alastair Crooks has a degree in journalism and worked as a car salesman for a variety of manufacturers before joining Auto Express in Spring 2019 as a Content Editor. Now, as our senior news reporter, his daily duties involve tracking down the latest news and writing reviews.

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