Skip advert
Advertisement

Mercedes M-Class vs rivals

New Merc M-Class promises better efficiency, plus luxury and off-road ability. Can it beat Land Rover and Porsche?

Mercedes ML rear

Since making its debut in 1997, the Mercedes M-Class has alwaysbeen a desirable choice in the large SUV class. The MkIII version of the rugged off-roader promises to be even more attractive, thanks to a boost in efficiency and slashed CO2 emissions.

There’s a choice of four and six-cylinder BlueTEC diesel engines, while UK models are only available in a single trim level: Sport. We test the ML 350 CDI model – and it faces Porsche’s Cayenne Diesel. The MkII car looks sleeker than the original and has a cleaner engine. It sets the benchmark for driver appeal and interior quality.

Advertisement - Article continues below

The other contender is our current large SUV favourite: the Land Rover Discovery 4. Refined, practical and unbeatable off-road, it’s a talented all-rounder that’s recently benefited from a host of updates, including a new eight-speed automatic gearbox.

So, will the brand new Mercedes sail to a simple victory in its first road test? Or will it endure a rough ride at the hands of a pair of tough rivals?

Verdict

Since making its debut in 1997, the Mercedes M-Class has always been a desirable choice in the large SUV class. The MkIII version of the rugged off-roader promises to be even more attractive, thanks to a boost in efficiency and slashed CO2 emissions.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Kona

2024 Hyundai

Kona

23,852 milesAutomaticPetrol1.6L

Cash £22,295
View Kona
Range Rover Velar

2023 Land Rover

Range Rover Velar

56,952 milesAutomaticDiesel2.0L

Cash £26,731
View Range Rover Velar
A1 Sportback

2023 Audi

A1 Sportback

24,307 milesManualPetrol1.0L

Cash £15,300
View A1 Sportback
CX-30

2022 Mazda

CX-30

46,243 milesManualPetrol2.0L

Cash £13,424
View CX-30

There’s a choice of four and six-cylinder BlueTEC diesel engines, while UK models are only available in a single trim level: Sport. We test the ML 350 CDI model – and it faces Porsche’s Cayenne Diesel. The MkII car looks sleeker than the original and has a cleaner engine. It sets the benchmark for driver appeal and interior quality.

The other contender is our current large SUV favourite: the Land Rover Discovery 4. Refined, practical and unbeatable off-road, it’s a talented all-rounder that’s recently benefited from a host of updates, including a new eight-speed automatic gearbox.

So, will the brand new Mercedes sail to a simple victory in its first road test? Or will it endure a rough ride at the hands of a pair of tough rivals?

Winner
Land Rover Discovery 4 ★★★★

Despite recent improvements, the Discovery isn’t as clean as its rivals, but standard equipment is generous and residuals are strong. The Land Rover’s unique blend of utilitarian functionality and upmarket class still stands out, plus it’s hugely comfortable, spacious and very relaxing to drive.

2nd
Porsche Cayenne ★★★★

Porsche has combined a high-class interior with agile handling and a superb diesel engine. The Cayenne strikes the best balance between sporty dynamics and luxury, and edges the Mercedes into third. It’s the choice for those who don’t need the Land Rover’s off-road prowess and space.

3rd
Mercedes M-class ★★★★

Third place seems harsh for the new M-Class, because in reality it doesn’t do a lot wrong. It just lacks the all-round versatility of the Land Rover, while it’s no cleaner than the Porsche and doesn’t ride any better. Crucially, the Mercedes isn’t as engaging to drive, plus it’s more expensive.

Skip advert
Advertisement

New & used car deals

Hyundai Tucson

Hyundai Tucson

RRP £29,840Avg. savings £5,613 off RRP*Used from £11,795
Vauxhall Corsa

Vauxhall Corsa

RRP £19,870Avg. savings £5,350 off RRP*Used from £8,777
MG MG4

MG MG4

RRP £27,005Avg. savings £6,250 off RRP*Used from £9,790
Volkswagen Golf

Volkswagen Golf

RRP £25,250Avg. savings £2,502 off RRP*Used from £8,995
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

PHEV megatest: Britain's 16 favourite plug-in hybrid systems tested
PHEV Megatest headershot

PHEV megatest: Britain's 16 favourite plug-in hybrid systems tested

It’s PHEV boom time. So we tried the systems offered in 59 cars, testing their EV range and efficiency, to reveal the ones you should buy
Car group tests
14 May 2026
New Land Rover Discovery is on track as brand seeks to redefine the model in relation to Defender
Land Rover Discovery badge

New Land Rover Discovery is on track as brand seeks to redefine the model in relation to Defender

The Land Rover Discovery is set for a reboot according to JLR boss P.B Balaji
News
14 May 2026
Battery repair black hole is putting the future of EVs under threat
Technician working on EV batteries

Battery repair black hole is putting the future of EVs under threat

Experts call for end to culture of replace rather than repair amid concerns over second-hand cars
News
13 May 2026