Bmw 520 vs Bmw F 650 cs: 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 F 650 cs
80%
MOT pass rate · 1 vehicles
Verdict: On MOT pass rate the Bmw 520 (78%) and Bmw F 650 cs (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Bmw 520 | Bmw F 650 cs |
|---|---|---|
| MOT pass rate | 78% | 80% ✓ |
| MOT failure rate | 22% | 20% ✓ |
| Faults & advisories per test | 1.6 | 1.1 ✓ |
| Dangerous-fault share | 3% | 0% ✓ |
| Average mileage | 134,460 mi | 25,048 mi |
| Sample size (vehicles) | 156,398 | 1 |
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 F 650 cs
- Drive chain slightly loose (6.2.1d)
- Drive chain worn but not considered excessive (6.2.1e)
- Front Tyre worn close to the legal limit (4.1.3(ii))
- Rear mono-shock pivot worn but not excessive (2.4.B.4)
- Front Brake pad(s) close to minimum limit (3.2.A1f(i))
- Stop lamp does not illuminate immediately a brake applies (1.3.1a)
Reliability FAQ
On MOT pass rate the Bmw 520 (78%) and Bmw F 650 cs (80%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Bmw 520 report Full Bmw F 650 cs 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.