Skip advert
Advertisement

Mercedes M-Class

Four-cylinder ML 250 mixes economy and premium appeal

On paper the efficient, entry-level M-Class has a lot to recommend it, while its upmarket image is unrivalled. It’s also hugely practical and well equipped. However, its four-cylinder turbodiesel engine is a disappointingly gruff performer and the ride is uncomfortable.

The new Mercedes M-Class hasn’t had the easiest start in life. When we tested the range-topping ML 350 CDI, it finished in a distant third place behind the Land Rover Discovery 4 and Porsche Cayenne. As a result, there’s a lot resting on this entrylevel ML 250 BlueTEC. Can it succeed where its more expensive brother failed?

Advertisement - Article continues below

On paper, it certainly challenges the strong eco-friendly credentials of the hybrid Lexus. Thanks to its efficient four-cylinder diesel, the Mercedes promises to match the RX with 44.8mpg fuel economy, while CO2 emissions are just 20g/km higher, at 165g/km.

Better still, apart from its badging, the newcomer is indistinguishable from the pricier V6 version. That means you get an imposing stance and straight-edged styling, plus eye-catching 19-inch AMG alloys. And when it comes to upmarket premium appeal, the three-pointed star badge beats its rivals hands down.

Inside, the M-Class feels just like any other Mercedes. There’s the same upright dash, logical layout and quirky single stalk for the indicators, main beam and wipers. The build quality is top notch, while the column-mounted gearshift is simple and the high-set driving position perfect. It’s not as well equipped as the RX, but you get sat-nav, Bluetooth and Artico fake leather trim.

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Leaf

2021 Nissan

Leaf

36,666 milesAutomaticElectric

Cash £11,600
View Leaf
Polo

2027 Volkswagen

Polo

28,265 milesManualPetrol1.0L

Cash £15,100
View Polo
Arkana

2021 Renault

Arkana

53,901 milesAutomaticPetrol1.6L

Cash £12,497
View Arkana
C-Max

2019 Ford

C-Max

25,130 milesAutomaticDiesel1.5L

Cash £11,497
View C-Max

Yet while the ML 250 isn’t as lavishly appointed as the Lexus, it is more practical. There’s a huge amount of space for occupants, plus the vast boot will swallow 690 litres of luggage. Fold the split/fold rear bench flat and the capacity increases to a van-like 2,010 litres. Unfortunately, the commercial vehicle comparisons also extend to the 2.1-litre four-cylinder diesel’s gruff soundtrack.

Still, with 500Nm of torque, the M-Class turned in surprisingly strong times at the test track. It sprinted from 0-60mph in 8.7 seconds – only a second slower than the more powerful Lexus. Yet on the road it needs to be worked hard to keep up with its rivals here, despite smooth and prompt shifts from the seven-speed automatic gearbox.

Despite bulky dimensions, the Mercedes feels reasonably agile and grippy through a series of corners. The steering isn’t as direct as in the Lexus or VW, but the ML 250 suffers from less body roll. The pay-off for this poise is a firm and crashy ride around town, while at higher speeds, the car can float over big bumps.

However, a proper four-wheel-drive system and standard hill descent control means it has the RX beaten off-road. Without options, the Mercedes costs £6,615 less than the RX, at £45,388. It also has strong residuals and returned a best-on-test 33.0mpg. Yet it’s a more expensive company car than the Lexus, while to get near the RX’s spec you’ll need to spend at least £4,000. Factor in a coarse engine and poor ride, and the M-Class faces an uphill struggle.

Skip advert
Advertisement

New & used car deals

Omoda 5

Omoda 5

RRP £23,990Avg. savings £1,535 off RRP*
Kia Sportage

Kia Sportage

RRP £28,065Avg. savings £3,330 off RRP*Used from £15,499
Audi A3

Audi A3

RRP £26,295Avg. savings £2,713 off RRP*Used from £10,970
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £4,588 off RRP*
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Jaecoo 7 recalled: a quarter of all brand’s 2025 UK cars going back to dealers
Jaecoo 7 - front action

Jaecoo 7 recalled: a quarter of all brand’s 2025 UK cars going back to dealers

The Chinese brand has initiated a recall for roughly 7,500 Jaecoo 7 models due to an incorrectly attached wiring harness clip
News
6 Mar 2026
New Dacia Jogger Hybrid 155 review: frugal family car makes tons of sense in town
Dacia Jogger Hybrid 155 - front tracking

New Dacia Jogger Hybrid 155 review: frugal family car makes tons of sense in town

Dacia's MPV goes well with hybrid power, but it can get a bit thirsty on longer trips
Road tests
6 Mar 2026
New Mazda CX-5 2026 review: spacious SUV is a step in the wrong direction
Auto Express news reporter Ellis Hyde standing next to a Mazda CX-5

New Mazda CX-5 2026 review: spacious SUV is a step in the wrong direction

The new CX-5 a fair bit different to the old model, but that's not necessarily a good thing
Road tests
6 Mar 2026