Bmw 316 vs Bmw 550: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bmw 316
69%
MOT pass rate · 157,337 vehicles
Bmw 550
81%
MOT pass rate · 441 vehicles
More reliable
Verdict: On MOT pass rate, the Bmw 550 is the more reliable of the two — 81% pass first time versus 69%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Bmw 316 | Bmw 550 |
|---|---|---|
| MOT pass rate | 69% | 81% ✓ |
| MOT failure rate | 31% | 19% ✓ |
| Faults & advisories per test | 2.3 | 1.3 ✓ |
| Dangerous-fault share | 1% ✓ | 3% |
| Average mileage | 124,177 mi | 101,435 mi |
| Sample size (vehicles) | 157,337 | 441 |
Most common faults
Bmw 316
- Oil leak
- 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)
- Nearside Rear Brake pipe slightly corroded (3.6.B.2c)
- Offside Rear Brake pipe slightly corroded (3.6.B.2c)
Bmw 550
- Under-trays fitted obscuring some underside components
- Oil leak, but not excessive (8.4.1 (a) (i))
- Engine covers fitted obscuring some components in the engine bay
- Offside Rear Tyre worn close to the legal limit (4.1.E.1)
- Nearside 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))
Reliability FAQ
On MOT pass rate, the Bmw 550 is the more reliable of the two — 81% pass first time versus 69%. It's one signal among several; check the full breakdown below.
Full Bmw 316 report Full Bmw 550 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.