Kawasaki K4 vs Kawasaki Zx-9r: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Kawasaki K4
83%
MOT pass rate · 5 vehicles
Kawasaki Zx-9r
84%
MOT pass rate · 8,856 vehicles
Verdict: On MOT pass rate the Kawasaki K4 (83%) and Kawasaki Zx-9r (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Head to head
| Measure | Kawasaki K4 | Kawasaki Zx-9r |
|---|---|---|
| MOT pass rate | 83% | 84% ✓ |
| MOT failure rate | 17% | 16% ✓ |
| Faults & advisories per test | 0.3 ✓ | 0.8 |
| Dangerous-fault share | 0% ✓ | 1% |
| Average mileage | 31,803 mi | 32,039 mi |
| Sample size (vehicles) | 5 | 8,856 |
Most common faults
Kawasaki K4
- front wheel slightly stiff to rotate.
- Drive chain slightly loose (6.2.1d)
- Front Floor brake test indicates a binding brake (3.3.C2c)
- Steering movement slightly 'notchy' (2.2.1b)
- Front Direction indicators affected by the operation of another lamp (1.5.1c)
- Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a)
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 K4 (83%) and Kawasaki Zx-9r (84%) are very close — weigh the individual measures below, and remember condition depends on age, mileage and upkeep.
Full Kawasaki K4 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.