BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Kawasaki Z650: MOT pass rate by registration year

Which Z650 years pass first time, and which fall short of the model's 81.6% average, from 7,430 DVSA tests.

1983
highest-passing year · 85.6%
1985
lowest-passing year · 76.1%
9.5pp
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: 1983 (85.6% of 201 tests). Lowest: 1985 (76.1% of 67). Years more than two points below the model average: 1971, 1981, 1985.

74%81%88%1971: 77.4% pass (62 tests)1976: 82.3% pass (130 tests)1977: 83.4% pass (1,232 tests)1978: 80.2% pass (1,728 tests)1979: 84.1% pass (1,210 tests)1980: 80.2% pass (1,295 tests)1981: 77.0% pass (722 tests)1982: 83.2% pass (351 tests)1983: 85.6% pass (201 tests)1984: 84.5% pass (238 tests)1985: 76.1% pass (67 tests)197119801985
RegisteredTestsFirst-time passvs model (81.6%)
1971 62 77.4% -4.2 pp
1976 130 82.3% +0.7 pp
1977 1,232 83.4% +1.8 pp
1978 1,728 80.2% -1.4 pp
1979 1,210 84.1% +2.5 pp
1980 1,295 80.2% -1.4 pp
1981 722 77.0% -4.6 pp
1982 351 83.2% +1.6 pp
1983 201 85.6% +4.0 pp
1984 238 84.5% +2.9 pp
1985 67 76.1% -5.5 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
73%86%99%2005: 80.9% pass (136 tests)2006: 80.3% pass (670 tests)2007: 78.6% pass (561 tests)2008: 78.0% pass (528 tests)2009: 77.0% pass (530 tests)2010: 80.9% pass (513 tests)2011: 79.1% pass (541 tests)2012: 78.3% pass (502 tests)2013: 83.6% pass (494 tests)2014: 81.9% pass (485 tests)2015: 80.9% pass (493 tests)2016: 86.4% pass (433 tests)2017: 84.9% pass (443 tests)2018: 87.6% pass (299 tests)2019: 83.8% pass (228 tests)2020: 86.9% pass (176 tests)2021: 85.9% pass (142 tests)2022: 88.6% pass (105 tests)2023: 87.8% pass (74 tests)2024: 94.7% pass (38 tests)2025: 89.7% pass (39 tests)20052025

Questions

Which Z650 years have the lowest MOT pass rate?
1971, 1981, 1985 registered examples pass first time less often than the Kawasaki Z650 overall (81.6%); the 1985 cohort is lowest at 76.1% from 67 tests.
Which Z650 year has the highest MOT pass rate?
1983, at 85.6% of 201 first tests (2005–2025). Years more than two points above the model average: 1979, 1983, 1984.
How much does the Z650 pass rate vary by year?
9.5 percentage points between the highest (1983, 85.6%) and lowest (1985, 76.1%) 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 Z650 reliability, failures and mileage · ranked #3254 of 5428 models· other Kawasaki models: ZX-6R, ZX-9R, ZZR600, ER5, ZZ-R1100, ZX