BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Kawasaki Z900: MOT pass rate by registration year

Which Z900 years pass first time, and which fall short of the model's 86.9% average, from 4,100 DVSA tests.

1971
highest-passing year · 93.1%
1976
lowest-passing year · 85.0%
8.1pp
spread across 6 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: 1971 (93.1% of 72 tests). Lowest: 1976 (85.0% of 2,162).

83%89%95%1971: 93.1% pass (72 tests)1973: 92.1% pass (127 tests)1974: 89.1% pass (457 tests)1975: 86.9% pass (787 tests)1976: 85.0% pass (2,162 tests)1977: 91.8% pass (243 tests)197119751977
RegisteredTestsFirst-time passvs model (86.9%)
1971 72 93.1% +6.2 pp
1973 127 92.1% +5.2 pp
1974 457 89.1% +2.2 pp
1975 787 86.9% +0.0 pp
1976 2,162 85.0% -1.9 pp
1977 243 91.8% +4.9 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 · 2005–2022
80%89%99%2005: 83.1% pass (59 tests)2006: 84.4% pass (289 tests)2007: 89.0% pass (273 tests)2008: 84.2% pass (279 tests)2009: 83.4% pass (295 tests)2010: 87.3% pass (276 tests)2011: 87.2% pass (290 tests)2012: 86.1% pass (302 tests)2013: 87.9% pass (330 tests)2014: 85.5% pass (324 tests)2015: 85.8% pass (352 tests)2016: 89.4% pass (320 tests)2017: 85.7% pass (335 tests)2018: 92.7% pass (123 tests)2019: 93.3% pass (60 tests)2020: 92.7% pass (41 tests)2021: 95.6% pass (45 tests)2022: 90.0% pass (40 tests)20052022

Questions

Which Z900 years have the lowest MOT pass rate?
none: no registration year of the Kawasaki Z900 falls more than two points under the model's 86.9% overall pass rate.
Which Z900 year has the highest MOT pass rate?
1971, at 93.1% of 72 first tests (2005–2025). Years more than two points above the model average: 1971, 1973, 1974, 1977.
How much does the Z900 pass rate vary by year?
8.1 percentage points between the highest (1971, 93.1%) and lowest (1976, 85.0%) 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 Z900 reliability, failures and mileage · ranked #1937 of 5428 models· other Kawasaki models: ZX-6R, ZX-9R, ZZR600, ER5, ZZ-R1100, ZX