Bmw 520 vs Bmw Coupe: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bmw 520
78%
MOT pass rate · 156,398 vehicles
More reliable
Bmw Coupe
72%
MOT pass rate · 80 vehicles
Verdict: On MOT pass rate, the Bmw 520 is the more reliable of the two — 78% pass first time versus 72%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Bmw 520 | Bmw Coupe |
|---|---|---|
| MOT pass rate | 78% ✓ | 72% |
| MOT failure rate | 22% ✓ | 28% |
| Faults & advisories per test | 1.6 ✓ | 2.1 |
| Dangerous-fault share | 3% | 1% ✓ |
| Average mileage | 134,460 mi | 118,690 mi |
| Sample size (vehicles) | 156,398 | 80 |
Most common faults
Bmw 520
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Under-trays fitted obscuring some underside components
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
Bmw Coupe
- Nearside Rear Tyre worn close to the legal limit (4.1.E.1)
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Parking brake: efficiency below requirements (3.7.B.7)
- Oil leak, but not excessive (8.4.1 (a) (i))
- Nearside Front Tyre worn close to the legal limit (4.1.E.1)
- Offside Front Tyre worn close to the legal limit (4.1.E.1)
Reliability FAQ
On MOT pass rate, the Bmw 520 is the more reliable of the two — 78% pass first time versus 72%. It's one signal among several; check the full breakdown below.
Full Bmw 520 report Full Bmw Coupe 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.