Bmw 520 vs Bmw R80st: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bmw 520
78%
MOT pass rate · 156,398 vehicles
Bmw R80st
96%
MOT pass rate · 173 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw R80st (96%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Bmw 520 | Bmw R80st |
|---|---|---|
| MOT pass rate | 78% | 96% ✓ |
| MOT failure rate | 22% | 4% ✓ |
| Faults & advisories per test | 1.6 | 0.1 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 134,460 mi | 19,857 mi |
| Sample size (vehicles) | 156,398 | 173 |
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 R80st
- Front Brake lever worn, but not excessively (1.1.15 (b))
- Front Stop lamp switch does not operate in accordance with the requirements (4.3.2 (a) (i))
- Nearside Fuel cap seal starting to perish
Reliability FAQ
On MOT pass rate the Bmw 520 (78%) and Bmw R80st (96%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Bmw 520 report Full Bmw R80st 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.