Skip advert
Advertisement

New Mercedes-AMG G 63 2018 review

We deliver our verdict as legendary G-Class performance 4x4 is transformed

Overall Auto Express rating

3.5

How we review cars
Find your Mercedes G-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

If you wanted a Mercedes G-Class before, you’ll want one even more now. It’s better on and off road, while interior ergonomics, quality and functionality are all up to the standards we’ve come to expect from the German firm. It’s still a big, heavy and sometimes unwieldy SUV, and true rivals are few and far between, but that doesn’t stop it being an intriguingly competent all-rounder.

Advertisement - Article continues below

It’s nearly 40 years since Mercedes launched the first-generation G-Class. The basic shape has changed very little in that time, but for 2018 the rugged SUV has undergone its most significant transformation yet.

While it might look familiar, this new G-Class gets a new body, chassis, steering, suspension, engines and gearbox, as well as new driver assistance systems. The subtly revised design retains most of the SUV’s iconic features, however, including the bonnet-top indicators, visible door hinges, boot-mounted spare tyre and protruding wheelarches.

Best 4x4s and SUVs on sale in 2018

The boxy shape is similar, too, with a recognisably upright screen and characteristically square doors. Even so, bosses tell us just three external parts have been carried over: the washer jets, door handles and the protective cover for the spare wheel.

The G-Wagen’s rich history hasn’t been neglected inside, though. Key features like the chrome switchgear and passenger grab handle are carried over almost unchanged, and you still sit very high. Quality is worthy of the six-figure price, as well.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

G Class

2024 Mercedes

G Class

47,000 milesAutomaticPetrol4.0L

Cash £159,995
View G Class
G Class

2024 Mercedes

G Class

40,510 milesAutomaticPetrol4.0L

Cash £129,000
View G Class
G Class

2017 Mercedes

G Class

66,000 milesAutomaticPetrol5.5L

Cash £69,990
View G Class
G Class

2024 Mercedes

G Class

3,111 milesAutomaticDiesel2.9L

Cash £121,990
View G Class

All UK cars get a digital dashboard, comprising two 12.3-inch screens with Merc’s intuitive COMAND infotainment system and touch-sensitive steering wheel scroll pads. Every model comes with a Burmester stereo and three-zone climate control, as well as a 360-degree camera, LED lights and a sunroof.

Advertisement - Article continues below

The G-Class is on sale now, and the first cars will arrive in July. Initially, the only model available will be the G 63 – either in standard guise or Edition 1 trim tested here. While that might not seem the most logical starting point, the outgoing AMG version actually outsold the diesel variant two to one. Every car gets a nine-speed auto box, four-wheel drive and three differential locks.

The G-Wagen still feels like a big car on the road. Its size makes city streets a challenge, while rural roads require new levels of spatial awareness. The vastly improved but still vague steering and poor turning circle ensure you’ll need to leave plenty of time for manoeuvres.

At higher speeds, though, the new car represents a big step forward. There’s lots of extra sound deadening, and while its bluff shape still generates significant wind noise at 70mph, it’s as refined as you’d expect a Mercedes to be.

In the Comfort setting, the ride is best described as skittish. While it’s not harsh, the ladder chassis isn’t the most sophisticated set-up for an SUV, so it doesn’t feel as cohesive as other premium models. Neat trickery under the skin helps to keep roll in check, but the light controls offer little feel through fast bends. Yet you learn to trust the car. Despite its size, you can push it hard if you give the 2.5-tonne SUV time to stop. The brakes are strong, but its weight demands more anticipation than might otherwise be necessary.

With help from its three diff locks, the G 63 is unrivalled off road. There’s more ground clearance, and it’ll wade 10cm deeper than before. Approach, tilt and break-over angles are all improved, and a special G-Mode engages the low-transfer gearbox, ensuring unflappable traction.

Like any AMG, the 63’s trump card is its engine. The sense of theatre is as evident here as in an E-Class or S-Class, and is only emphasised by the howling side-exit exhausts. A touch on the accelerator sends the car forward at a rate of knots, chasing the next bend with real ferocity. With 850Nm of torque and 170kg less weight than before, throttle response is instant.

The G-Class now offers more leg, shoulder and elbow room, too, but if back seat space is a priority, a Range Rover will still serve you better.

Skip advert
Advertisement
Deputy editor

Richard has been part of the team for over a decade. During this time he has covered a huge amount of news and reviews for Auto Express, as well as being the face of Carbuyer and DrivingElectric on Youtube. In his current role as deputy editor, he is now responsible for keeping our content flowing and managing our team of talented writers.

New & used car deals

Mercedes G Class

Mercedes G Class

RRP £134,220Used from £102,000
Land Rover Range Rover

Land Rover Range Rover

RRP £105,675Avg. savings £7,125 off RRP*Used from £69,640
Land Rover Range Rover Sport
BMW X7

BMW X7

RRP £81,635Avg. savings £10,361 off RRP*Used from £50,920
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Car Deal of the Day: A Volkswagen Golf R Estate for less than a GTI
VW Golf R Estate - front cornering

Car Deal of the Day: A Volkswagen Golf R Estate for less than a GTI

The Golf R Estate is one of the best performance estates around – and right now it’s criminally cheap. It’s our Deal of the Day for 9 June.
News
9 Jun 2025
Should Citroen make a new 2CV? Some say oui, others say non
Opinion - should they do a new 2CV

Should Citroen make a new 2CV? Some say oui, others say non

A new Citroen 2CV could be inbound, but would this be a French fancy or a financial flop?
Opinion
8 Jun 2025
Avoid using car finance claim firms, says financial watchdog
Finance agreement

Avoid using car finance claim firms, says financial watchdog

FCA warns that using a claim firm could see consumers lose up to 30 per cent of their winnings if car finance redress scheme is implemented
News
6 Jun 2025