BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Kawasaki KZ650: MOT pass rate by registration year

Which KZ650 years pass first time, and which fall short of the model's 80.7% average, from 725 DVSA tests.

1979
highest-passing year · 82.0%
1980
lowest-passing year · 75.4%
6.6pp
spread across 4 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: 1979 (82.0% of 211 tests). Lowest: 1980 (75.4% of 57). Years more than two points below the model average: 1980.

74%79%83%1977: 79.3% pass (140 tests)1978: 81.6% pass (228 tests)1979: 82.0% pass (211 tests)1980: 75.4% pass (57 tests)197719791980
RegisteredTestsFirst-time passvs model (80.7%)
1977 140 79.3% -1.4 pp
1978 228 81.6% +0.9 pp
1979 211 82.0% +1.3 pp
1980 57 75.4% -5.3 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 · 2006–2019
66%81%96%2006: 85.2% pass (54 tests)2007: 89.1% pass (46 tests)2008: 75.5% pass (53 tests)2009: 71.1% pass (45 tests)2010: 77.6% pass (49 tests)2011: 78.8% pass (52 tests)2012: 72.7% pass (44 tests)2013: 90.0% pass (50 tests)2014: 74.1% pass (58 tests)2015: 90.9% pass (44 tests)2016: 75.0% pass (48 tests)2017: 79.2% pass (48 tests)2018: 86.7% pass (30 tests)2019: 88.9% pass (36 tests)20062019

Questions

Which KZ650 years have the lowest MOT pass rate?
1980 registered examples pass first time less often than the Kawasaki KZ650 overall (80.7%); the 1980 cohort is lowest at 75.4% from 57 tests.
Which KZ650 year has the highest MOT pass rate?
1979, at 82.0% of 211 first tests (2005–2025).
How much does the KZ650 pass rate vary by year?
6.6 percentage points between the highest (1979, 82.0%) and lowest (1980, 75.4%) 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 KZ650 reliability, failures and mileage · ranked #3439 of 5428 models· other Kawasaki models: ZX-6R, ZX-9R, ZZR600, ER5, ZZ-R1100, ZX