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

e-C4

2023 Citroen

e-C4

25,221 milesAutomaticElectric

Cash £11,500
View e-C4
Countryman

2022 MINI

Countryman

19,410 milesAutomaticPetrol2.0L

Cash £18,727
View Countryman
Touran

2025 Volkswagen

Touran

53,822 milesAutomaticPetrol1.5L

Cash £19,136
View Touran
Niro

2024 Kia

Niro

23,861 milesAutomaticPetrol1.6L

Cash £17,987
View Niro

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

Renault Clio

Renault Clio

RRP £16,160Avg. savings £2,417 off RRP*Used from £7,195
Toyota Yaris Cross

Toyota Yaris Cross

RRP £27,145Avg. savings £2,518 off RRP*Used from £16,150
Nissan Qashqai

Nissan Qashqai

RRP £27,415Avg. savings £6,056 off RRP*Used from £10,399
Vauxhall Corsa

Vauxhall Corsa

RRP £19,690Avg. savings £5,308 off RRP*Used from £10,699
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

New AUDI E5 Sportback 2026 review: the best car Audi has built in decades
AUDI E5 Sportback - front tracking

New AUDI E5 Sportback 2026 review: the best car Audi has built in decades

This is the first car from Audi's China-focused sub-brand, and it's a real shame that we won't be getting it
Road tests
16 Jan 2026
Volkswagen ID. Tiguan spied with brand new body and interior
Volkswagen ID. Tiguan - front 3/4

Volkswagen ID. Tiguan spied with brand new body and interior

The transformation from ID.4 to ID. Tiguan will be big, as VW preps one its most important new cars of 2026
News
15 Jan 2026
Dacia’s jam-packed 2026 diary revealed: A hybrid Sandero, new Spring and much more
Dacia Spring facelift - full front

Dacia’s jam-packed 2026 diary revealed: A hybrid Sandero, new Spring and much more

Dacia posted big sales last year. We reveal six new products to make the budget brand blow up in ‘26
News
17 Jan 2026