Mercedes-Benz GLS review

Costs & verdict

Manufacturer price from:£75,575
What Car? Target Price£70,467
2020 Mercedes GLS third row seats
Review continues below...

Costs & verdict

Everyday costs, plus how reliable and safe it is

Although it’s expensive even by luxury SUV standards, it’s worth bearing in mind that the GLS offers more performance than our favourite version of the BMW X7, and big discounts are available.

You also get a lot of equipment for your money, including keyless entry and start, heated front and second-row seats, 22in alloy wheels and a head-up display which projects key information onto the windscreen to reduce the need to take your eyes off the road.

That said, you might want to consider stepping up to Premium + trim, because this brings massaging seats, heated armrests and semi-autonomous driving tech that’s designed to take the strain out of driving when it comes to adjusting your speed, steering, changing lanes, braking, or moving off in traffic jams.

Unsurprisingly, the GLS is in the top BIK company-car tax group. Meanwhile, its official average fuel economy is 35.8mpg, which is beaten by all diesel versions of the X7 and Audi Q7, but does better the 30.4mpg of the similarly powerful Range Rover SDV8.

The GLS is too new to have proven its dependability, but in the 2019 What Car? Reliability Survey Mercedes finished 24th out of 31 manufacturers – behind Volvo (11th), Audi (20th) and BMW (21st), but ahead of Land Rover (last).

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2020 Mercedes GLS side
2020 Mercedes GLS infotainment screen
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The GLS is as luxurious and well equipped as you’d expect Mercedes’ flagship SUV to be. However, the rival BMW X7 is more practical and better to drive.

  • Effortless performance
  • Impressive refinement
  • Interior feels special
  • Poorly controlled ride
  • Limited third-row head room
  • Expensive