Kawasaki Z1b vs Kawasaki Zx-9r: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Kawasaki Z1b
92%
MOT pass rate · 133 vehicles
More reliable
Kawasaki Zx-9r
84%
MOT pass rate · 8,856 vehicles
Verdict: On MOT pass rate, the Kawasaki Z1b is the more reliable of the two — 92% pass first time versus 84%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Kawasaki Z1b | Kawasaki Zx-9r |
|---|---|---|
| MOT pass rate | 92% ✓ | 84% |
| MOT failure rate | 8% ✓ | 16% |
| Faults & advisories per test | 0.2 ✓ | 0.8 |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 26,416 mi | 32,039 mi |
| Sample size (vehicles) | 133 | 8,856 |
Most common faults
Kawasaki Z1b
- Rear Tyre worn close to the legal limit (4.1.3(ii))
- Headlamp masks/converters fitted
- Headlamp aim too low (1.6)
- Front Tyre worn close to the legal limit (4.1.3(ii))
- Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Exhaust noisy (7.1.2)
Kawasaki Zx-9r
- Rear Tyre worn close to the legal limit (4.1.3(ii))
- Front Tyre worn close to the legal limit (4.1.3(ii))
- Exhaust noisy (7.1.2)
- Exhaust noisy (8.1.1 (a))
- Drive chain slightly loose (6.2.1d)
- Front Brake pad(s) close to minimum limit (3.2.A1f(i))
Reliability FAQ
On MOT pass rate, the Kawasaki Z1b is the more reliable of the two — 92% pass first time versus 84%. It's one signal among several; check the full breakdown below.
Full Kawasaki Z1b report Full Kawasaki Zx-9r 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.