Skip advert
Advertisement

Mercedes ML 350 CDI

Our verdict on the volume-selling V6 diesel version of the new Mercedes ML

Find your Mercedes M-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 M-Class is still a practical, luxurious and comfortable SUV. The new model’s revised V6 diesel brings improved fuel economy and performance. While the Porsche Cayenne and BMW X5 are sportier to drive, the M-Class strikes a satisfying balance between comfort and dynamics. If you want even lower fuel bills, go for the four-cylinder ML 250.

Advertisement - Article continues below

It’s been a long time since Mercedes built a genuinely class-leading SUV – but that could be about to change with the arrival of the new M-Class. Its refinement and off-road ability impressed us in Europe, but how will the car fare on tougher UK roads?

Outside, it looks imposing, with an AMG styling pack that includes side skirts and 19-inch alloys as standard. It’s also longer and wider than before, so it matches rivals such as the BMW X5 and Porsche Cayenne for road presence.

In addition, the luxurious interior feels much smarter and better built than the outgoing model’s. A long list of standard equipment includes climate control, sat-nav and durable artificial leather upholstery.

The efficient new four-cylinder ML 250 grabbed the headlines at the launch, but the majority of UK cars will still be powered by this revised 3.0-litre V6 diesel engine.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Niro

2024 Kia

Niro

43,492 milesAutomaticPetrol1.6L

Cash £16,500
View Niro
500e

2022 Fiat

500e

19,841 milesAutomaticElectric

Cash £11,700
View 500e
Sandero Stepway

2022 Dacia

Sandero Stepway

19,370 milesAutomaticPetrol1.0L

Cash £12,109
View Sandero Stepway
Ateca

2025 SEAT

Ateca

16,880 milesAutomaticPetrol1.5L

Cash £18,197
View Ateca

Push the accelerator and it’s easy to see why: with 255bhp and a whopping 620Nm of torque on tap, the ML 350 provides truly effortless performance in any of its seven gears. It shrugs off its two-tonne bulk and sprints from 0-62mph in only 7.4 seconds, yet it also claims nearly 40mpg and emits 189g/km of CO2 – big improvements over the old car’s 32.5mpg and 230g/km.

As you’d expect from a Mercedes, the M-Class is also superbly quiet and refined. The ride is smooth, even on those sporty 19-inch alloys, while the engine makes only a muted roar under acceleration and fades into the background when cruising on the motorway. The M-Class is a great long-distance car.

Around corners, it’s also more agile than the old version, thanks to a more precise steering system. Although it doesn’t have the pin-sharp dynamics of a Cayenne or X5, it’s a more comfortable choice than either of those.

The M-Class doesn’t have seven seats like a Land Rover Discovery, but there’s room for five adults and plenty of luggage, too. You can fold the seats flat for a maximum 2,010 litres of storage room, which is pretty impressive.

Factor in the big range of off-road gadgets, such as the clever hill-descent system, and you have a great all-rounder.

Skip advert
Advertisement

New & used car deals

Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £5,613 off RRP*Used from £11,795
Toyota Yaris Cross
Nissan Juke

Nissan Juke

RRP £21,290Avg. savings £4,614 off RRP*Used from £8,640
Volkswagen Polo

Volkswagen Polo

RRP £15,270Avg. savings £1,925 off RRP*Used from £8,888
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

BMW X3 vs Honda CR-V vs VW Tayron vs MG HS vs Range Rover Sport: five top PHEVs head to head
Top five PHEVs head to head - header with team

BMW X3 vs Honda CR-V vs VW Tayron vs MG HS vs Range Rover Sport: five top PHEVs head to head

The five top plug-in hybrid systems go head-to-head on UK roads, in the test no PHEV buyer can do without
Car group tests
17 May 2026
New Jaecoo 3 has the Ford Puma and Renault 4 in its crosshairs
Jaecoo 3 - front (watermarked)

New Jaecoo 3 has the Ford Puma and Renault 4 in its crosshairs

Jaecoo is targeted the small SUV market with the new 3, and our exclusive images preview how it could look
News
18 May 2026
Ford’s fightback is on: five new EV and hybrid models for Europe by 2029
Ford future teaser

Ford’s fightback is on: five new EV and hybrid models for Europe by 2029

Ford’s fightback in Europe is coming, and it could see Fiesta and Focus return
News
18 May 2026