BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Kawasaki GPZ550: MOT pass rate by registration year

Which GPZ550 years pass first time, and which fall short of the model's 75.1% average, from 2,904 DVSA tests.

1981
highest-passing year · 85.6%
1984
lowest-passing year · 68.8%
16.8pp
spread across 11 years

Pass rate by registration year

first-time pass rate · cohorts with 50 or more tests · registration year from first use date

Highest pass rate: 1981 (85.6% of 202 tests). Lowest: 1984 (68.8% of 462). Years more than two points below the model average: 1982, 1984.

65%77%89%1981: 85.6% pass (202 tests)1982: 73.0% pass (200 tests)1983: 77.1% pass (140 tests)1984: 68.8% pass (462 tests)1985: 73.3% pass (419 tests)1986: 77.4% pass (318 tests)1987: 78.1% pass (228 tests)1988: 74.7% pass (182 tests)1989: 74.4% pass (242 tests)1990: 74.9% pass (335 tests)1991: 82.7% pass (81 tests)198119861991
RegisteredTestsFirst-time passvs model (75.1%)
1981 202 85.6% +10.5 pp
1982 200 73.0% -2.1 pp
1983 140 77.1% +2.0 pp
1984 462 68.8% -6.3 pp
1985 419 73.3% -1.8 pp
1986 318 77.4% +2.3 pp
1987 228 78.1% +3.0 pp
1988 182 74.7% -0.4 pp
1989 242 74.4% -0.7 pp
1990 335 74.9% -0.2 pp
1991 81 82.7% +7.6 pp

Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years. A first-time MOT pass is a roadworthiness check, not a full mechanical inspection.

Pass rate over time

first-time pass rate by test year · 2005–2025
57%79%100%2005: 64.6% pass (82 tests)2006: 70.3% pass (323 tests)2007: 70.7% pass (259 tests)2008: 69.1% pass (236 tests)2009: 70.4% pass (206 tests)2010: 75.4% pass (195 tests)2011: 69.7% pass (198 tests)2012: 74.6% pass (173 tests)2013: 82.2% pass (157 tests)2014: 74.8% pass (163 tests)2015: 77.3% pass (150 tests)2016: 74.8% pass (139 tests)2017: 81.5% pass (124 tests)2018: 85.3% pass (75 tests)2019: 78.8% pass (80 tests)2020: 87.1% pass (62 tests)2021: 75.0% pass (80 tests)2022: 85.7% pass (63 tests)2023: 91.1% pass (56 tests)2024: 93.5% pass (46 tests)2025: 91.9% pass (37 tests)20052025

Questions

Which GPZ550 years have the lowest MOT pass rate?
1982, 1984 registered examples pass first time less often than the Kawasaki GPZ550 overall (75.1%); the 1984 cohort is lowest at 68.8% from 462 tests.
Which GPZ550 year has the highest MOT pass rate?
1981, at 85.6% of 202 first tests (2005–2025). Years more than two points above the model average: 1981, 1986, 1987, 1991.
How much does the GPZ550 pass rate vary by year?
16.8 percentage points between the highest (1981, 85.6%) and lowest (1984, 68.8%) cohorts with at least 50 tests. Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

Full report: Kawasaki GPZ550 reliability, failures and mileage · ranked #4291 of 5428 models· other Kawasaki models: ZX-6R, ZX-9R, ZZR600, ER5, ZZ-R1100, ZX