Volvo Unknown vs Volvo Xc40: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Volvo Unknown
86%
MOT pass rate · 319,034 vehicles
Volvo Xc40
90%
MOT pass rate · 52,314 vehicles
More reliable
Verdict: On MOT pass rate, the Volvo Xc40 is the more reliable of the two — 90% pass first time versus 86%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Volvo Unknown | Volvo Xc40 |
|---|---|---|
| MOT pass rate | 86% | 90% ✓ |
| MOT failure rate | 14% | 10% ✓ |
| Faults & advisories per test | 0.7 ✓ | 1.0 |
| Dangerous-fault share | 4% ✓ | 7% |
| Average mileage | 431,427 mi | 46,098 mi |
| Sample size (vehicles) | 319,034 | 52,314 |
Most common faults
Volvo Unknown
- Oil leak, but not excessive (8.4.1 (a) (i))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Parking brake efficiency below requirements (1.4.2 (a) (i))
- Service brake efficiency below requirements (1.2.2 (a) (i))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
Volvo Xc40
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Rear Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Front Brake pad(s) wearing thin (1.1.13 (a) (ii))
- Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii))
- Nearside Rear Child Seat fitted not allowing full inspection of adult belt
Reliability FAQ
On MOT pass rate, the Volvo Xc40 is the more reliable of the two — 90% pass first time versus 86%. It's one signal among several; check the full breakdown below.
Full Volvo Unknown report Full Volvo Xc40 report Most reliable cars
Pass rates are computed over completed (pass/fail) MOT tests. Reliability also depends on age, mileage and upkeep — see each model's page for the full picture.