BIKERELIABILITY Reg check
Registration-year report · 2005–2025

Data as of: DVSA MOT results to 2025

Triumph T120: MOT pass rate by registration year

Which T120 years pass first time, and which fall short of the model's 91.1% average, from 5,037 DVSA tests.

1960
highest-passing year · 96.2%
1975
lowest-passing year · 86.0%
10.2pp
spread across 15 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: 1960 (96.2% of 131 tests). Lowest: 1975 (86.0% of 50). Years more than two points below the model average: 1968, 1975.

84%91%98%1960: 96.2% pass (131 tests)1961: 93.0% pass (285 tests)1962: 94.8% pass (116 tests)1963: 92.3% pass (143 tests)1964: 93.1% pass (173 tests)1965: 93.8% pass (306 tests)1966: 91.0% pass (335 tests)1967: 91.4% pass (418 tests)1968: 88.4% pass (588 tests)1969: 91.9% pass (652 tests)1970: 90.5% pass (621 tests)1971: 90.9% pass (659 tests)1972: 92.0% pass (163 tests)1973: 92.5% pass (133 tests)1975: 86.0% pass (50 tests)196019671975
RegisteredTestsFirst-time passvs model (91.1%)
1960 131 96.2% +5.1 pp
1961 285 93.0% +1.9 pp
1962 116 94.8% +3.7 pp
1963 143 92.3% +1.2 pp
1964 173 93.1% +2.0 pp
1965 306 93.8% +2.7 pp
1966 335 91.0% -0.1 pp
1967 418 91.4% +0.3 pp
1968 588 88.4% -2.7 pp
1969 652 91.9% +0.8 pp
1970 621 90.5% -0.6 pp
1971 659 90.9% -0.2 pp
1972 163 92.0% +0.9 pp
1973 133 92.5% +1.4 pp
1975 50 86.0% -5.1 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 · 2005–2019
87%93%100%2005: 98.4% pass (61 tests)2006: 92.1% pass (380 tests)2007: 89.5% pass (353 tests)2008: 89.4% pass (367 tests)2009: 90.2% pass (418 tests)2010: 91.0% pass (378 tests)2011: 89.3% pass (413 tests)2012: 89.1% pass (404 tests)2013: 90.9% pass (408 tests)2014: 89.8% pass (421 tests)2015: 92.6% pass (405 tests)2016: 93.6% pass (391 tests)2017: 91.9% pass (358 tests)2018: 93.3% pass (119 tests)2019: 94.4% pass (54 tests)20052019

Questions

Which T120 years have the lowest MOT pass rate?
1968, 1975 registered examples pass first time less often than the Triumph T120 overall (91.1%); the 1975 cohort is lowest at 86.0% from 50 tests.
Which T120 year has the highest MOT pass rate?
1960, at 96.2% of 131 first tests (2005–2025). Years more than two points above the model average: 1960, 1962, 1965.
How much does the T120 pass rate vary by year?
10.2 percentage points between the highest (1960, 96.2%) and lowest (1975, 86.0%) 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 T120 reliability, failures and mileage · ranked #659 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird