Skip advert
Advertisement
Road tests

BMW X3 diesel review

We drive the updated BMW X3 in entry-level sDrive 18d guise. Is it any good?

BMW X3 front cornering
Overall Auto Express rating

4.0

How we review cars
Find your BMW X3
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

If you don’t plan to take the X3 off-road at any point, the sDrive 18d model is worth considering. On public roads the loss in performance and traction is less severe than you’d think, while equipment levels are generous. With real-world economy virtually identical to the xDrive 20d, ultimately it’s about the list price, which is why we’d recommend sticking with SE trim and a manual gearbox to make the absolute most of the savings on offer.

Advertisement - Article continues below

Let’s face it, most BMW X3 drivers are unlikely to ever take their cars off-road – if rugged ability is a high priority a Land Rover will always be a better fit. That’s why this entry-level, rear-wheel drive version of the recently updated X3 could make more sense than you think. 

Badged the sDrive 18d, it uses the same 2.0-litre four-cylinder turbodiesel from BMW’s new modular engine family as the best-selling X3 xDrive 20d, but detuned from 187bhp and 400Nm of torque to 148bhp and 360Nm. As a result it costs £2,000 less and it’s the cleanest model in the X3 range, but not by much. 

Its figures of 55.4mpg and 133g/km are only a 1.1mpg and 5g/km improvement over the four-wheel drive 20d, when both are fitted with the optional eight-speed automatic gearbox. Order the 18d with optional 17-inch aero wheels, low rolling resistance tyres and a manual ‘box and consumption improves to 60.1mpg and 124g/km. 

Skip advert
Advertisement
Skip advert
Advertisement - Article continues below

Used - available now

Astra

2025 Vauxhall

Astra

1,785 milesManualPetrol1.2L

Cash £16,615
View Astra
E-Class Cabriolet

2020 Mercedes

E-Class Cabriolet

34,638 milesAutomaticDiesel2.0L

Cash £28,731
View E-Class Cabriolet
GLE Coupe

2023 Mercedes

GLE Coupe

86,662 milesAutomaticDiesel2.9L

Cash £35,699
View GLE Coupe
2 Hybrid

2026 Mazda

2 Hybrid

12,389 milesAutomaticPetrol1.5L

Cash £16,557
View 2 Hybrid

Driven back to back with the 20d you would notice the power deficit immediately, but in isolation the generous torque lets you to breeze along serenely. Only when you really put your foot down does the engine feel strangled and the refinement begins to unravel. Keep things sedate though and its quick enough for everyday duties. 

BMW X3 interior

Traction, or lack of it, isn’t remotely an issue on public roads either. Even in the wet, there’s simply not enough power to break the rear tyre’s grasp on the road surface, while the lateral grip the X3 generates in fast corners is amazing for a high-riding SUV. To make the most of its talents, we would expect paddles for the eight-speed automatic gearbox to be standard-fit, but beyond that the driving experience is definitely befitting of the BMW badge.  

Don’t be put-off by the ‘entry-level’ tag either – this is still a £30,000-plus SUV and that’s reflected in the equipment count. Even in SE trim you get leather seats, climate control, 17-inch wheels and automatic headlights, plus this facelifted model now come with sat-nav, heated front seats and an auto tailgate. It’s one of the most practical cars in its class too, with 40:20:40 split-folding rear seats that expand the boot space from 550-litres to 1,600-litres.

Now take a look at the best SUVs currently on the market here...

Skip advert
Advertisement

New & used car deals

Nissan Qashqai

Nissan Qashqai

RRP £11,120Avg. savings £6,248 off RRP*Used from £9,895
Skoda Kodiaq

Skoda Kodiaq

RRP £39,390Avg. savings £9,673 off RRP*Used from £25,250
Dacia Spring

Dacia Spring

RRP £11,990Avg. savings £703 off RRP*Used from £10,649
Hyundai Tucson

Hyundai Tucson

RRP £11,770Avg. savings £4,230 off RRP*Used from £11,770
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Tories spark rumours of 'heavy car tax' in Labour budget - here’s what it could cost
Land Rover Defender V8 - front cornering

Tories spark rumours of 'heavy car tax' in Labour budget - here’s what it could cost

The Conservative Party is claiming that Chancellor John Healey may bring a weight-based car tax supplement in with the next budget
News
23 Oct 2026
BMW iX5 review
BMW iX5

BMW iX5 review

The BMW iX5 blends everything we love about the iX3 with some useful extra space – but it’ll cost you
In-depth reviews
22 Oct 2026
Renault 5 has significant upgrades to come, but don’t expect revolution
Renault 5 - front action

Renault 5 has significant upgrades to come, but don’t expect revolution

The popular Renault 5 will be a mainstay in the brand’s range for years to come, but it won’t spawn extra MINI-style models
News
23 Oct 2026