Kawasaki Unknown vs Kawasaki Z 550-gt: reliability comparison
MOT pass rates, common faults and mileage compared from real UK MOT data.
Kawasaki Unknown
85%
MOT pass rate · 151,652 vehicles
More reliable
Kawasaki Z 550-gt
79%
MOT pass rate · 704 vehicles
Verdict: On MOT pass rate, the Kawasaki Unknown is the more reliable of the two — 85% pass first time versus 79%. It's one signal among several; check the full breakdown below.
Head to head
| Measure | Kawasaki Unknown | Kawasaki Z 550-gt |
|---|---|---|
| MOT pass rate | 85% ✓ | 79% |
| MOT failure rate | 15% ✓ | 21% |
| Faults & advisories per test | 0.8 | 0.8 |
| Dangerous-fault share | 3% | 1% ✓ |
| Average mileage | 19,921 mi | 46,220 mi |
| Sample size (vehicles) | 151,652 | 704 |
Most common faults
Kawasaki Unknown
- Exhaust noisy (8.1.1 (a))
- Front Brake indicates slight fluctuation of brake effort (1.2.1 (e))
- COVID-19 6 MONTH EXTENSION
- Rear reflector missing (4.8.2 (a) (ii))
- Front Tyre worn close to the legal limit (5.2.3 (e))
- Drive chain slightly loose (6.1.7 (c) (i))
Kawasaki Z 550-gt
- Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Front Brake disc(s) slightly scored (3.2.A1l)
- Rear Roller brake test indicates a slightly juddering brake (3.3.A1b)
- Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d)
- Front Brake pad(s) close to minimum limit (3.2.A1f(i))
- Front Wheel alignment slightly misaligned. (2.5.1)
Reliability FAQ
On MOT pass rate, the Kawasaki Unknown is the more reliable of the two — 85% pass first time versus 79%. It's one signal among several; check the full breakdown below.
Full Kawasaki Unknown report Full Kawasaki Z 550-gt 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.