Range-topping SUV will be the most luxurious and spacious model in Mercedes’ line-up

Mercedes-Benz has been caught testing its next-generation GLS on public roads around 18 months before the SUV hits the market.

The successor to Mercedes’ current range-topping SUV can be seen sporting a design similar to that of the smaller and also recently spotted new GLE, which is due next year.

The GLS’s significantly larger scale is emphasised by its boxier rear section, although part of this is due to cladding applied to the development car to hide its design.

Like the current GLS, the next-gen car will share many parts with the S-Class, including its powertrains. The S-Class gets six and eight-cylinder turbocharged petrol engines, a six-cylinder turbo diesel and a petrol-electric hybrid, so expect a similar line-up with the GLS.

Key to the engine line-up’s latest improvements is a 48V electric system that uses an electric booster compressor and integrated starter generator to enable mild hybrid running.

At the top of the range will be a GLS 63 with AMG’s twin-turbocharged 4.0-litre V8 powerplant, likely with the same 612bhp on offer as in the S63.

Much of the SUV’s in-car tech will also be carried across from the S-Class, including its autonomous features. The 2017 S-Class introduced Mercedes’ latest Distronic Active Proximity Control and Active Steer Assist systems, which can automatically accelerate and brake the car within posted speed limits while providing autonomous steering for periods of up to 30sec.

More content:

Our Verdict

Mercedes-Benz GLS

Mercedes claims the GLS is the S-Class of the SUV world. We find out if it can live up to these claims

Join the debate


6 October 2017
I would pay for an option to delete all autonomous technology from a car.

7 October 2017
Would that include deleting the ABS and traction systems as of course real drivers don't need that? Also how about the engine management? A true driver manually adjusts their ignition timing via a lever. I've removed my airbag sensors too and have a large red switch which I reckon I can deploy quicker than the car in the event of a crash...





8 October 2017

So if as we are lead to believe the millenials are the only ones wanting "cool" self driving where's the intersection with a S class GLC owner that's a baby boomer ?

Add your comment

Log in or register to post comments

Find an Autocar car review

Driven this week

  • Lexus LS 500h
    First Drive
    14 December 2017
    New flagship saloon from Lexus provides a luxury interior to rival the best but comes up short due to its hybrid powertrain
  • Volkswagen T-Roc 1.0 TSI SE
    First Drive
    14 December 2017
    Volkswagen's has high aspirations for its new crossover be the best in class and then some. We've driven the 1.0 TSI T-Roc out in the UK to see if it's as good as Wolfsburg says
  • Dacia Sandero Stepway LPG
    First Drive
    14 December 2017
    We’re familiar with the Sandero – it’s the cheap fuel that really intrigues us. We’ve sourced a dual-fuel Dacia to determine whether running a car on LPG is practical in Britain
  • Ford Mondeo ST-Line
    First Drive
    13 December 2017
    The Mondeo ST-Line marries sporty styling with that car's signature dynamism to make a rather appealing package designed for private buyers
  • Audi RS4 Avant
    First Drive
    12 December 2017
    The Audi RS4 Avant covers ground like few, if any, other estate cars, but it doesn’t involve you all that much in the process