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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. 

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.

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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

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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 >>


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


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