Triumph TR6P: MOT pass rate by registration year

Which TR6P years pass first time, and which fall short of the model's 92.5% average, from 641 DVSA tests.

1967

highest-passing year · 100.0%

1971

lowest-passing year · 87.7%

12.3pp

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: 1967 (100.0% of 70 tests). Lowest: 1971 (87.7% of 138). Years more than two points below the model average: 1970, 1971.

Registered	Tests	First-time pass	vs model (92.5%)
1967	70	100.0%	+7.5 pp
1969	225	94.2%	+1.7 pp
1970	94	90.4%	-2.1 pp
1971	138	87.7%	-4.8 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 TR6P years have the lowest MOT pass rate?: 1970, 1971 registered examples pass first time less often than the Triumph TR6P overall (92.5%); the 1971 cohort is lowest at 87.7% from 138 tests.
Which TR6P year has the highest MOT pass rate?: 1967, at 100.0% of 70 first tests (2005–2025).
How much does the TR6P pass rate vary by year?: 12.3 percentage points between the highest (1967, 100.0%) and lowest (1971, 87.7%) 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 TR6P reliability, failures and mileage · ranked #384 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird