Bmw 520 vs Bmw R 80 rt: 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 R 80 rt
84%
MOT pass rate · 4 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw R 80 rt (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Bmw 520 | Bmw R 80 rt |
|---|---|---|
| MOT pass rate | 78% | 84% ✓ |
| MOT failure rate | 22% | 16% ✓ |
| Faults & advisories per test | 1.6 | 0.6 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 134,460 mi | 43,990 mi |
| Sample size (vehicles) | 156,398 | 4 |
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 R 80 rt
- Front Wheel has a slightly distorted bead rim (5.2.2 (c) (i))
- Exhaust noisy (7.1.2)
- Exhaust noisy (8.1.1 (a))
- Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii))
- Front Tyre is incorrectly seated on the wheel rim (4.1.2b)
- Headlamp aim too low (1.6)
Reliability FAQ
On MOT pass rate the Bmw 520 (78%) and Bmw R 80 rt (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Bmw 520 report Full Bmw R 80 rt 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.