Triumph Rocket 111 Roadster: MOT pass rate by registration year

Which Rocket 111 Roadster years pass first time, and which fall short of the model's 90.7% average, from 2,642 DVSA tests.

2012

highest-passing year · 93.1%

2010

lowest-passing year · 89.5%

3.6pp

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: 2012 (93.1% of 493 tests). Lowest: 2010 (89.5% of 563).

Registered	Tests	First-time pass	vs model (90.7%)
2010	563	89.5%	-1.2 pp
2011	621	90.0%	-0.7 pp
2012	493	93.1%	+2.4 pp
2013	942	90.9%	+0.2 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 · 2013–2025

Questions

Which Rocket 111 Roadster years have the lowest MOT pass rate?: none: no registration year of the Triumph Rocket 111 Roadster falls more than two points under the model's 90.7% overall pass rate.
Which Rocket 111 Roadster year has the highest MOT pass rate?: 2012, at 93.1% of 493 first tests (2005–2025).
How much does the Rocket 111 Roadster pass rate vary by year?: 3.6 percentage points between the highest (2012, 93.1%) and lowest (2010, 89.5%) 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 Rocket 111 Roadster reliability, failures and mileage · ranked #748 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird