Mercedes GLS review

Category: Luxury SUV

Section: Introduction

Available fuel types:petrol, diesel
Available colours:
Mercedes GLS 2021 front tracking
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  • Mercedes GLS 2021 front tracking
  • Mercedes GLS 2021 rear tracking
  • 2021 Mercedes GLS dashboard
  • 2021 Mercedes GLS third row seats
  • Mercedes GLS 2021 instruments detail
  • 2021 Mercedes GLS infotainment screen
  • 2021 Mercedes GLS infotainment touchpad
  • 2021 Mercedes GLS front seats
  • 2021 Mercedes GLS second-row seats
  • 2021 Mercedes GLS boot
  • Mercedes GLS 2021 left panning
  • Mercedes GLS 2021 left panning
RRP £79,480What Car? Target Price from£75,641
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Introduction

What Car? says...

There are big cars, there are really big cars, and then there’s the Mercedes GLS. This 5.2-metre long, 2.0-metre wide behemoth is designed to seat seven people in comfort and is the flagship of Mercedes’ extensive SUV range – think of it as an S Class SUV, if you will. 

As far as rivals are concerned, the GLS is closest in concept to the 5.1-metre long BMW X7. However, as a prospective buyer, you might also want to consider (slightly) smaller seven-seaters such as the Audi Q7, Land Rover Discovery and Volvo XC90, or if you only need five seats, the full-fat Range Rover

Right now, there’s only one engine on offer for the core GLS: a 3.0-litre six-cylinder diesel that brings a 400d badge. There is, however, a performance-focused Mercedes GLS 63 with a 4.0-litre V8 that is designed to take on the mighty X7 M50i, while the extravagantly luxurious Mercedes-Maybach GLS 600 (which also features the same V8-engine) has its sights set squarely on the Bentayga Bentayga and Rolls Royce Cullinan

In the GLS 400d, no matter which of the three trim levels you choose, you get a nine-speed automatic gearbox, four-wheel drive and air suspension as standard. Plus, the interior is finished to the same kind of level as you'll find in the S-Class limousine, and Mercedes also offers semi-autonomous tech to make driving easier and help keep you safe.

You can even specify your GLS with an off-road package if you want to venture off the beaten path – although, let’s face it, cars of this type are rarely asked to tackle more than a slippery National Trust car park. 

In this review, we’ll look at everything from what the Mercedes GLS is like to drive, to how practical it is compared with rivals and how much it will cost you to run. Or, alternatively, to see how much we can save you on a new GLS, check out the deals available through our New Car Buying service.

At a glance

Number of trims4 see more
Available fuel types Which fuel is best for you? petrol, diesel
MPG range across all versions21.1 - 32.8
Avaliable doors options5
Warranty3 years / No mileage cap
Company car tax at 20% (min/max)£5,736 / £12,530
Company car tax at 40% (min/max)£11,472 / £25,061

How much is it?

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