Diesel SUVs combine torque, efficiency, and long-distance comfort—qualities valued by UK buyers commuting between cities or navigating motorway journeys.
For 2025, we’ve handpicked seven used diesel SUVs that deliver real-world mileage, strong reliability, and well-documented service history—without stretching your budget.
1. Mazda CX-5 2.2 Skyactiv-D (AWD)
What makes it shine:
With around 145 bhp and 400 Nm torque, Mazda’s Skyactiv-D engine delivers effortless overtakes even with heavy loads.
Owners report up to 47 MPG real-world on mixed UK roads.
Go for models between 2016–2020 with under 50k miles—these offer the best blend of interior refinement, resale value (often above £12k), and mechanical dependability.
Reliable enough for long-term use.
CX-5s regularly hit 200k+ miles with minimal issues beyond brakes and filters.
2. Skoda Kodiaq 2.0 TDI (4×4)
What makes it shine:
This seven-seat SUV is perfect for families who need space and diesel efficiency; real-world driving averages around 45–50 MPG on motorway-heavy commutes (parkers.co.uk insight).
Look for 2017–2019 models with the 150 bhp engine instead of the early 190 bhp option—slightly slower but smoother and more efficient.
Reliability has improved in newer units; common fixes include DPF cleaning and occasional EGR servicing.
3. Volvo XC60 D4 / D5 AWD
What makes it shine:
Volvo’s D4 diesel (190 bhp) strikes a great balance between power and economy.
Real-world usage yields approximately 42 MPG, especially across A-roads and motorways.
Couple this with Volvo’s strong safety ratings and tech like pilot assist, and you’ve got a luxury SUV that’s reliable and family-safe.
Choose 2014–2017 models with full service history and avoid early DSG auto gearbox issues by verifying recent software updates.
4. Land Rover Discovery Sport 2.0 TD4
What makes it shine:
Full-size presence with 4×4 versatility. Owners commonly report 40–42 MPG real mileage on longer drives.
Look for 2015–2018 TD4 variants with low mileage and the optional tow pack if you’re planning to tow caravans or trailers.
Modern chassis reliability is respectable—avoid units with extended off-road abuse and ensure the transmission and oil-grade changes are done as recommended.
5. BMW X3 xDrive20d
What makes it shine:
The legendary B47 diesel engine delivers road-tested 44–46 MPG with smooth refinement and 400 Nm torque.
One of the most driver-engaging diesel SUVs in this list.
Target 2018–2020 models with the 190 bhp engine—not the higher-powered variants—for long-term reliability and better fuel economy.
Be mindful of past valve-cleaning campaigns and ensure maintenance includes the high-pressure common-rail fuel system servicing.
6. Land Rover Range Rover Evoque 2.0 TD4
What makes it shine:
Compact yet premium. Real-world owners report 37–42 MPG depending on engine (TD4 or TD4 SE) and driving style.
Take care to choose models post-2018—with updated infotainment (Touch Pro) and fewer gearbox kinks.
Known for soft suspension and refined ride quality, Evoques deliver a comfortable cabin even at motorway speeds.
Be wary of models with only service history available via Land Rover-approved shops.
7. Mercedes GLC 220d
What makes it shine:
Luxury and diesel economy make the GLC appealing—real owners typically see 42–44 MPG on mixed roads.
Models from 2016 onwards include features like PreSafe and Burmester audio, elevating the premium experience.
Servicing can be more expensive, but many used examples come with certified inspections and extended service packages; check for known EGR and AdBlue system faults in early 2016 units.
Ownership Snapshot
| Model | Real MPG | Seating | Common Issues |
| Mazda CX-5 | ~47 MPG | 5 | DPF/EGR carbon build-up |
| Skoda Kodiaq | ~47 MPG | 7 | Software updates |
| Volvo XC60 | ~42 MPG | 5 | EGR filter, gearbox |
| Discovery Sport | ~41 MPG | 5-7 | Transmission mud, DPF |
| BMW X3 | ~45 MPG | 5 | B47 chain timing |
| Range Rover Evoque | ~40 MPG | 5 | Transmission tech, software |
| Mercedes GLC | ~43 MPG | 5 | AdBlue, electronics |
Answering Some Of Your Doubts
Low mileage in this segment is under 60,000 miles.
These ranges often mean significant powertrain life remaining, straightforward service history, and more predictable reliability—all critical for long-term ownership.
Diesel SUVs offer strong torque, efficient fuel mileage at motorway speeds, and towing ability—perfect for long commutes or rural use.
They’re also favored in UK motoring culture for used value and longevity.
Yes—especially if serviced consistently, driven at motorway speeds regularly, and maintained with the correct oil and filter grades.
Some older diesel SUVs may suffer from DPF clogging if driven only short urban trips.
Consider Euro 6 compliant models.
These typically meet ULEZ and LEZ requirements and emit far less NOₓ than pre-2015 diesels.
Confirm compliance during purchase to avoid low-emission zone penalties.
Service every 12,000 miles or yearly, with at least annual DPF and EGR system checks.
Regular oil and fuel filter changes are critical, especially on models with high-pressure common-rail engines.
Stay Focused On Your Goal
Yes diesel engines do not give you the best mileage out there, but you need to remember: you are in the market for used diesel SUVs that are reliable.
Anytime you plan on purchasing a used vehicle, remember that you will be giving up on a thing or two.
There’s no such thing as a no-compromise buy, especially when it comes to used vehicles.
What I want you to figure out, is what you want from the vehicle. I’ve curated the list of used SUVs that have high reliability, but if that’s not something you are looking for, or the vehicles skimp on a feature that YOU deem important, then there are other options available in the market.
