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

C4

2023 Citroen

C4

44,627 milesAutomaticPetrol1.2L

Cash £11,600
View C4
e-208

2023 Peugeot

e-208

14,937 milesAutomaticElectric

Cash £13,200
View e-208
A3 Sportback

2024 Audi

A3 Sportback

59,495 milesManualPetrol1.5L

Cash £16,100
View A3 Sportback
C-HR

2022 Toyota

C-HR

28,615 milesAutomaticPetrol1.8L

Cash £19,600
View C-HR

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

Vauxhall Corsa

Vauxhall Corsa

RRP £19,690Avg. savings £5,308 off RRP*Used from £10,999
Volkswagen Polo

Volkswagen Polo

RRP £14,480Avg. savings £1,912 off RRP*Used from £7,299
Hyundai Tucson

Hyundai Tucson

RRP £29,820Avg. savings £6,189 off RRP*Used from £12,295
Toyota Yaris Cross

Toyota Yaris Cross

RRP £27,245Avg. savings £2,529 off RRP*Used from £15,750
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Some Chinese car brands are doomed to disappear, warns Skoda boss
Skoda Kodiaq - front cornering

Some Chinese car brands are doomed to disappear, warns Skoda boss

Skoda’s sales and marketing boss warns “there will be a consolidation” of the number of Chinese car brands around
News
3 Feb 2026
New Kia EV1 electric city car on the way to rival the Renault Twingo
Kia EV1 - front (watermarked)

New Kia EV1 electric city car on the way to rival the Renault Twingo

Kia's design boss lifts the lid on plans for a Renault Twingo and Volkswagen ID. Lupo rival, and our exclusive images preview how the EV1 could look
News
2 Feb 2026
Meet Renault’s new SUV: a Dacia Duster but not as we know it…
Renault Duster - front

Meet Renault’s new SUV: a Dacia Duster but not as we know it…

Posher inside and out and with more headroom, welcome to the upside down world of the Indian Duster
News
26 Jan 2026