BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Triumph T100SS: MOT pass rate by registration year

Which T100SS years pass first time, and which fall short of the model's 92.1% average, from 692 DVSA tests.

1962
highest-passing year · 96.4%
1967
lowest-passing year · 82.1%
14.3pp
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: 1962 (96.4% of 111 tests). Lowest: 1967 (82.1% of 84). Years more than two points below the model average: 1967.

79%89%99%1962: 96.4% pass (111 tests)1965: 94.3% pass (122 tests)1966: 94.7% pass (170 tests)1967: 82.1% pass (84 tests)196219661967
RegisteredTestsFirst-time passvs model (92.1%)
1962 111 96.4% +4.3 pp
1965 122 94.3% +2.2 pp
1966 170 94.7% +2.6 pp
1967 84 82.1% -10.0 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
82%91%100%2006: 92.7% pass (55 tests)2007: 89.4% pass (47 tests)2008: 93.6% pass (47 tests)2009: 95.7% pass (47 tests)2010: 90.6% pass (53 tests)2011: 89.3% pass (56 tests)2012: 94.5% pass (55 tests)2013: 90.4% pass (52 tests)2014: 84.7% pass (59 tests)2015: 96.9% pass (64 tests)2016: 88.3% pass (60 tests)2017: 94.6% pass (56 tests)20062017

Questions

Which T100SS years have the lowest MOT pass rate?
1967 registered examples pass first time less often than the Triumph T100SS overall (92.1%); the 1967 cohort is lowest at 82.1% from 84 tests.
Which T100SS year has the highest MOT pass rate?
1962, at 96.4% of 111 first tests (2005–2025). Years more than two points above the model average: 1962, 1965, 1966.
How much does the T100SS pass rate vary by year?
14.3 percentage points between the highest (1962, 96.4%) and lowest (1967, 82.1%) 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: Triumph T100SS reliability, failures and mileage · ranked #455 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird