Skip advert
Advertisement

Mercedes GL63 AMG

We test out the enormous Mercedes GL63 AMG - but is it a tad out of place in the UK?

Overall Auto Express rating

3.0

How we review cars
Find your Mercedes GL-Class
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

The GL63 is an American car that’s rather lost in translation in the UK. It’s enormous, a tad ungainly and will hose through fuel like there’s a big hole in its 100-litre fuel tank. However, there’s no denying its interior space is impressive and performance is suitably epic, although it should be given how much it’ll cost to buy and run.

Advertisement - Article continues below

If the new Range Rover is a little on the small side, and the Audi Q7’s still a bit pokey, then there’s only one car that’ll really fit the bill - the Mercedes GL-Class.

Mercedes’ gigantic GL is a full-size SUV in every sense of the word, particularly in the top-spec GL63 AMG spec tested here, given the blend of luxurious fittings, huge space and epic performance it offers.

•  Mercedes

There’s no missing the GL, as its 5,141mm-long body will be protruding well beyond the limits of most UK parking spaces. On most SUVs, side steps are purely for show, but even taller drivers will find this useful in the climb up to the front seat. It goes without saying that you sit up high, with a commanding view down the GL’s long bonnet.

•  Audi Q7 review

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

S-Cross

2025 Suzuki

S-Cross

41,759 milesManualPetrol1.4L

Cash £12,950
View S-Cross
C40 Recharge

2022 Volvo

C40 Recharge

36,565 milesAutomaticElectric

Cash £23,497
View C40 Recharge
X2

2023 BMW

X2

27,868 milesAutomaticPetrol1.5L

Cash £21,397
View X2
Yaris Hybrid

2021 Toyota

Yaris Hybrid

18,883 milesAutomaticPetrol1.5L

Cash £17,076
View Yaris Hybrid

•  Range Rover review

The interior isn’t stylish – nothing about the GL is – but it is made of familiar high-grade plastics and leathers, and comes loaded with equipment that’s lifted from the flagship S-Class.

Press the starter button and the engine barks into life, accompanied by a bassy woofle emerging from the rear bumper – around four metres behind the driver. The engine is the familiar hand-finished 5.5-litre twin-turbo AMG V8. And despite the car’s weight, performance remains sharp.

Advertisement - Article continues below

The engine has to work hard, so makes plenty of noise – no bad thing in our opinion – but the GL is still a very fast car. It is less adept when it comes to corners. The traction control is quick to grab the brakes, like it is on the older G63, even if you turn the system off. That said, the GL is very easy to drive, the controls are light and the brakes do a good job of managing the car’s 2,580kg weight.

The GL doesn’t have a big following in the UK – it goes down better in the Middle East and the US where petrol prices are relatively low. And while the fact that the GL is almost two-metres wide makes negotiating traffic tricky, the advantage is that the GL features space for seven people and a decent amount of luggage.

The two rearmost seats are for children only, and will rise or lower into the boot floor individually at the touch of a button. The middle row seats also lower electronically, performing a neat forward roll to allow access to the back row of seats. However, they require old-fashioned muscle to get them back in place. Once reinstated, the middle row of seats has loads of head and leg space, and their own air conditioning vents.

Skip advert
Advertisement

New & used car deals

Nissan Juke

Nissan Juke

RRP £19,785Avg. savings £4,614 off RRP*Used from £9,372
Volkswagen Polo

Volkswagen Polo

RRP £15,255Avg. savings £1,864 off RRP*Used from £6,495
Renault Clio

Renault Clio

RRP £16,160Avg. savings £2,674 off RRP*Used from £8,995
Vauxhall Corsa

Vauxhall Corsa

RRP £19,690Avg. savings £4,794 off RRP*Used from £6,320
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Dacia’s baby EV due in 12 months with a tiny £15k price tag
Dacia £15k EV design render

Dacia’s baby EV due in 12 months with a tiny £15k price tag

Dacia's new model will be developed in double-quick time, and it'll be built in Europe to avoid China tariffs
News
24 Jul 2025
Renault will “stick to the plan” as it hits number 2 in Europe
Renault 5 - front static

Renault will “stick to the plan” as it hits number 2 in Europe

Renault has no plans to fight Volkswagen for sales supremacy, despite huge growth in EV sales due to new Renault 5
News
23 Jul 2025
New MG IM6 review: the EV to finally tame Tesla
MG IM6 - front

New MG IM6 review: the EV to finally tame Tesla

The new MG IM6 boasts a dual-motor set-up with an astonishing 741bhp
Road tests
23 Jul 2025