BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Triumph Cub: MOT pass rate by registration year

Which Cub years pass first time, and which fall short of the model's 91.3% average, from 828 DVSA tests.

1964
highest-passing year · 100.0%
1960
lowest-passing year · 83.0%
17.0pp
spread across 8 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: 1964 (100.0% of 78 tests). Lowest: 1960 (83.0% of 94). Years more than two points below the model average: 1960, 1966.

80%90%100%1960: 83.0% pass (94 tests)1961: 90.6% pass (139 tests)1962: 94.6% pass (74 tests)1963: 91.2% pass (57 tests)1964: 100.0% pass (78 tests)1965: 89.6% pass (67 tests)1966: 87.3% pass (55 tests)1967: 96.2% pass (52 tests)196019641967
RegisteredTestsFirst-time passvs model (91.3%)
1960 94 83.0% -8.3 pp
1961 139 90.6% -0.7 pp
1962 74 94.6% +3.3 pp
1963 57 91.2% -0.1 pp
1964 78 100.0% +8.7 pp
1965 67 89.6% -1.7 pp
1966 55 87.3% -4.0 pp
1967 52 96.2% +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 · 2006–2017
83%91%99%2006: 91.1% pass (56 tests)2007: 92.5% pass (53 tests)2008: 90.3% pass (62 tests)2009: 89.5% pass (76 tests)2010: 91.9% pass (74 tests)2011: 90.4% pass (73 tests)2012: 89.2% pass (65 tests)2013: 93.2% pass (73 tests)2014: 90.1% pass (71 tests)2015: 93.1% pass (72 tests)2016: 85.9% pass (64 tests)2017: 96.2% pass (52 tests)20062017

Questions

Which Cub years have the lowest MOT pass rate?
1960, 1966 registered examples pass first time less often than the Triumph Cub overall (91.3%); the 1960 cohort is lowest at 83.0% from 94 tests.
Which Cub year has the highest MOT pass rate?
1964, at 100.0% of 78 first tests (2005–2025). Years more than two points above the model average: 1962, 1964, 1967.
How much does the Cub pass rate vary by year?
17.0 percentage points between the highest (1964, 100.0%) and lowest (1960, 83.0%) 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: Triumph Cub reliability, failures and mileage · ranked #619 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird