Triumph TT600: MOT pass rate by registration year

Which TT600 years pass first time, and which fall short of the model's 79.9% average, from 15,432 DVSA tests.

2004

highest-passing year · 81.9%

2001

lowest-passing year · 79.1%

2.8pp

spread across 5 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: 2004 (81.9% of 277 tests). Lowest: 2001 (79.1% of 4,834).

Registered	Tests	First-time pass	vs model (79.9%)
2000	4,771	79.8%	-0.1 pp
2001	4,834	79.1%	-0.8 pp
2002	4,109	80.2%	+0.3 pp
2003	1,411	81.2%	+1.3 pp
2004	277	81.9%	+2.0 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 · 2005–2025

Questions

Which TT600 years have the lowest MOT pass rate?: none: no registration year of the Triumph TT600 falls more than two points under the model's 79.9% overall pass rate.
Which TT600 year has the highest MOT pass rate?: 2004, at 81.9% of 277 first tests (2005–2025).
How much does the TT600 pass rate vary by year?: 2.8 percentage points between the highest (2004, 81.9%) and lowest (2001, 79.1%) 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 TT600 reliability, failures and mileage · ranked #3603 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird