Bmw 118 vs Bmw M4 s-a: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Bmw 118
81%
MOT pass rate · 195,122 vehicles
Bmw M4 s-a
90%
MOT pass rate · 587 vehicles
More reliable
Verdict: On MOT pass rate, the Bmw M4 s-a is the more reliable of the two — 90% pass first time versus 81%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Bmw 118 | Bmw M4 s-a |
|---|---|---|
| MOT pass rate | 81% | 90% ✓ |
| MOT failure rate | 19% | 10% ✓ |
| Faults & advisories per test | 1.5 | 0.0 ✓ |
| Dangerous-fault share | 4% | — ✓ |
| Average mileage | 85,676 mi | 53,601 mi |
| Sample size (vehicles) | 195,122 | 587 |
Most common faults
Bmw 118
- 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))
- Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e))
- 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)
Bmw M4 s-a
No fault breakdown available.
Reliability FAQ
On MOT pass rate, the Bmw M4 s-a is the more reliable of the two — 90% pass first time versus 81%. It's one signal among several; check the full breakdown below.
Full Bmw 118 report Full Bmw M4 s-a 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.