Triumph T100S: MOT pass rate by registration year

Which T100S years pass first time, and which fall short of the model's 91.9% average, from 594 DVSA tests.

1970

highest-passing year · 93.7%

1969

lowest-passing year · 91.1%

2.6pp

spread across 3 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: 1970 (93.7% of 207 tests). Lowest: 1969 (91.1% of 169).

Registered	Tests	First-time pass	vs model (91.9%)
1968	139	92.8%	+0.9 pp
1969	169	91.1%	-0.8 pp
1970	207	93.7%	+1.8 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

Questions

Which T100S years have the lowest MOT pass rate?: none: no registration year of the Triumph T100S falls more than two points under the model's 91.9% overall pass rate.
Which T100S year has the highest MOT pass rate?: 1970, at 93.7% of 207 first tests (2005–2025).
How much does the T100S pass rate vary by year?: 2.6 percentage points between the highest (1970, 93.7%) and lowest (1969, 91.1%) 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 T100S reliability, failures and mileage · ranked #488 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird