Used test: BMW X7 vs Mercedes GLS verdict

Big and brash, the BMW X7 and Mercedes GLS make no effort to hide their opulence, but which makes the most sense when bought used?
BMW X7 vs Mercedes GLS rears

Our verdict

From a size and practical standpoint, you won't find differences of night and day proportions between the BMW X7 and Mercedes GLS. However, they're far from the same. The GLS is reasonably refined and loaded with kit – with particularly impressive safety equipment as standard – but its inconsistent interior quality and unsettled ride disappoint. It doesn’t live up to its billing as Mercedes’ flagship SUV.

advertisment

The X7, meanwhile, delivers in every area, and then some. It's outstanding inside and phenomenally relaxing on the road, and it would be the clear winner even if it cost the same as the GLS. But it doesn't – it costs less to buy and has suffered far less deprecation too. The X7 is our winner.

For all the latest reviews, advice and new car deals, sign up to the What Car? newsletter here


1st – BMW X7

BMW X7 2021 front cornering

For Relaxing ride; more entertaining to drive; brilliant build quality
Against Less standard equipment; less safety kit; not a huge saving off new

What Car? rating 4 stars out of 5

Read our full used BMW X7 review >>

Find a used BMW X7 for sale >>


2nd – Mercedes GLS

Mercedes GLS 2021 front cornering

For Incredibly well equipped; futuristic interior design; refined at high speeds
Against Unsettled ride; very expensive; inconsistent interior build quality

What Car? rating 3 stars out of 5

Read our full Mercedes GLS review >>

Find a used Mercedes GLS for sale >>

advertisment

Specifications: BMW X7 xDrive40d M Sport

Engine 3.0-litre diesel
Power 335bhp
Torque 516Ib ft
0-60mph 5.6sec
Top speed 152mph
Fuel economy 36.2mpg (official average)
CO2 emissions 211g/km


Specifications: Mercedes-Benz GLS 400d 4Matic AMG Line Premium Plus Executive

Engine 3.0-litre diesel
Power 325bhp
Torque 516Ib ft
0-60mph 6.0sec
Top speed 148mph
Fuel economy 31.7mpg (official average)
CO2 emissions 232g/km


<< Previous | Read more: The best used luxury SUVs >>

Page 4 of 4

News and advice

Feature

New Kia Stonic vs Seat Arona

Best of

Best-selling cars 2026: EV sales reach new heights in June

News

New Bentley Torcal: name confirmed for brand's first all-electric car

Feature

Most reliable Mercedes models - and the unreliable ones to avoid

Feature

Best medium vans 2026 – tried and tested

Best of

Best used car deals of the week