The Mazda CX-5 diesel stands as a compelling choice in the midsize SUV segment, blending robust performance with impressive fuel savings. Over six months and more than 17,000 miles, this long-term evaluation highlights its strengths in daily commuting, family hauls, and spirited drives, challenging the narrative that diesel powertrains are obsolete.
Engine Performance and Power Delivery
At the heart of this CX-5 is a 2.2-liter twin-turbo diesel engine producing 148 horsepower and a substantial 380 Nm of torque. This setup delivers effortless acceleration, particularly from low revs, making overtaking on highways or navigating urban traffic feel seamless. The six-speed automatic transmission shifts smoothly, enhancing the sense of connectivity between driver and road.
Real-world testing confirms the diesel’s prowess. On mixed routes, it surges forward with authority, aided by the torque that peaks early. Motorway cruising settles into a composed rhythm, where the engine’s initial growl fades into quiet efficiency. Independent tests echo this, noting the diesel’s superior low-end pull compared to petrol variants, with fuel savings up to 40% in varied conditions.
| Performance Metric | Diesel CX-5 | Petrol Comparison |
|---|---|---|
| 0-60 mph | 9.0 seconds | 8.3 seconds (2.5L NA) |
| Quarter-mile | 16.8 sec @ 81 mph | 16.4 sec @ 84 mph |
| Torque | 380 Nm | Lower in petrol models |
Fuel Economy in Everyday Scenarios
Fuel efficiency emerges as the diesel CX-5’s standout feature. Official figures claim around 46 mpg, but long-term averages hovered between 39.9 and 44.2 mpg across updates, culminating at 42.6 mpg over 17,505 miles. Early months saw 39.9 mpg with short trips, improving to 44.2 mpg as longer motorway runs increased.
- Month 1 (Mileage: 3,872): 39.9 mpg – Initial urban focus limited gains.
- Month 3 (Mileage: 8,634): 41.7 mpg – Balanced mix boosted results.
- Month 4 (Mileage: 13,673): 44.2 mpg – Loaded with gear, still efficient.
- Final (Mileage: 17,505): 42.6 mpg – Overall real-world average.
Comparisons with petrol engines are stark. Diesel models achieve 6-7 L/100km (about 40-47 mpg) on highways, versus 11 L/100km for petrols, translating to significant cost savings for high-mileage drivers. U.S. EPA ratings show 27/30 mpg city/highway, with real trips hitting 32 mpg.
Handling and Driving Dynamics
Mazda’s engineering shines in the CX-5’s chassis, offering car-like precision rare in SUVs. The diesel variant maintains this agility, with sharp steering and minimal body roll on twisty roads. Torque enables confident pace without constant gear changes, ideal for back-road adventures.
Suspension tuning balances comfort and sportiness. Bumps are absorbed smoothly, especially on 19-inch wheels, while high-speed stability reassures on motorways. Reviewers praise its engaging drive, contrasting firmer rivals.
Interior Comfort and Practicality
The cabin impresses with premium materials, supportive seats, and intuitive layout. Front space is generous, with heated seats and ample adjustment. Rear seating accommodates adults comfortably, though taller passengers note limited headroom.
Boot capacity suits family needs, expanding with folding seats. Soft-touch surfaces and solid build quality elevate it above budget competitors. Minor critiques include an awkward driving position for some, but overall ergonomics excel.
Key Pros and Cons
| Pros | Cons |
|---|---|
| Exceptional fuel economy | Diesel noise under hard acceleration |
| Strong low-end torque | Rear seat space for very tall adults |
| Premium interior | Misses some latest tech in base trims |
| Engaging handling | CO2 tax implications for fleets |
Reliability and Ownership Experience
No faults arose over 17,000 miles, underscoring Mazda’s reputation for durability. Routine servicing was straightforward, with no unexpected issues. Insurance groups at 22E keep costs reasonable (£514 quote).
Options like metallic paint (£580) add appeal without excess. Compared to peers, the CX-5 diesel proves low-maintenance, with long-term tests confirming its robustness.
Safety and Technology Features
Standard kit includes adaptive cruise, lane-keeping, and blind-spot monitoring. The diesel Sport trim enhances with leather and Bose audio. Infotainment is responsive, though Apple CarPlay integration could improve.
Safety ratings are strong, with comprehensive aids making it family-friendly. Tech suits most, but higher trims offer more advanced options.
Comparing Diesel to Petrol and Hybrid Rivals
Diesel edges petrols in efficiency and torque, suiting motorway users. Hybrids match economy but lack the CX-5’s driving purity. Pricing starts at £34,195, competitive with equipped rivals.
| Model | Economy (mpg) | Power (hp) | Price (£) |
|---|---|---|---|
| CX-5 Diesel | 42.6 real-world | 148 | 34,195 |
| CX-5 Petrol 2.5 | ~30-35 | 187 | ~32,000 |
| Rival Hybrid SUV | 45-50 | ~200 | 35,000+ |
Environmental Considerations and Future Outlook
CO2 emissions at 160 g/km incur £555 tax, higher than hybrids. Yet, for diesel’s efficiency, it suits high-mileage private buyers. Mazda’s Skyactiv tech minimizes emissions while maximizing refinement.
As markets shift, diesel remains viable where infrastructure supports it, especially for long-distance drivers.
Frequently Asked Questions
What is the real-world fuel economy of the Mazda CX-5 diesel?
Averages 42.6 mpg over long-term testing, improving on highways to near 45 mpg.
Is the CX-5 diesel reliable for high mileage?
Yes, no issues over 17,000 miles; Mazda’s build quality shines.
How does it handle compared to other SUVs?
Exceptionally car-like, with precise steering and balanced ride.
Suitable for families?
Yes, spacious boot, safe, and comfortable for five.
Any common problems?
None reported in tests; minor diesel noise only under load.
In summary, the Mazda CX-5 diesel excels as a versatile SUV, delivering efficiency, fun, and quality that justifies its place amid electrification trends.
References
- Mazda CX-5 diesel: long-term test review — Auto Express. 2022-11-14. https://www.autoexpress.co.uk/mazda/cx-5/357925/mazda-cx-5-diesel-long-term-test-review
- Mazda CX-5 Diesel Touring 2022 review — Chasing Cars. 2022. https://www.chasingcars.com.au/reviews/midsize-suvs/mazda-cx-5-diesel-touring-2022-review/
- 2019 Mazda CX-5 Skyactiv-D Diesel Review — MotorTrend. 2019. https://www.motortrend.com/reviews/2019-maxda-cx-5-diesel-skyactiv-d-review-specs-price
- Final report: Mazda CX-5 long-term test — Business Car. N/A. https://www.businesscar.co.uk/test-drives/final-report-mazda-cx-5-long-term-test/
- Mazda CX-5 Review: Long-term report two — Drive. N/A. https://www.drive.com.au/reviews/mazda-cx-5-review-long-term-report-two/

