Triumph T160: MOT pass rate by registration year

Which T160 years pass first time, and which fall short of the model's 89.7% average, from 1,002 DVSA tests.

1976

highest-passing year · 90.9%

1977

lowest-passing year · 85.2%

5.7pp

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: 1976 (90.9% of 175 tests). Lowest: 1977 (85.2% of 182). Years more than two points below the model average: 1977.

Registered	Tests	First-time pass	vs model (89.7%)
1975	499	90.4%	+0.7 pp
1976	175	90.9%	+1.2 pp
1977	182	85.2%	-4.5 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 · 2006–2018

Questions

Which T160 years have the lowest MOT pass rate?: 1977 registered examples pass first time less often than the Triumph T160 overall (89.7%); the 1977 cohort is lowest at 85.2% from 182 tests.
Which T160 year has the highest MOT pass rate?: 1976, at 90.9% of 175 first tests (2005–2025).
How much does the T160 pass rate vary by year?: 5.7 percentage points between the highest (1976, 90.9%) and lowest (1977, 85.2%) 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 T160 reliability, failures and mileage · ranked #1049 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird