Triumph Bonneville America 865: MOT pass rate by registration year

Which Bonneville America 865 years pass first time, and which fall short of the model's 88.8% average, from 5,130 DVSA tests.

2012

highest-passing year · 90.2%

2009

lowest-passing year · 88.1%

2.1pp

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 (90.2% of 827 tests). Lowest: 2009 (88.1% of 1,324).

Registered	Tests	First-time pass	vs model (88.8%)
2009	1,324	88.1%	-0.7 pp
2010	1,352	88.5%	-0.3 pp
2011	1,573	89.3%	+0.5 pp
2012	827	90.2%	+1.4 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 · 2012–2025

Questions

Which Bonneville America 865 years have the lowest MOT pass rate?: none: no registration year of the Triumph Bonneville America 865 falls more than two points under the model's 88.8% overall pass rate.
Which Bonneville America 865 year has the highest MOT pass rate?: 2012, at 90.2% of 827 first tests (2005–2025).
How much does the Bonneville America 865 pass rate vary by year?: 2.1 percentage points between the highest (2012, 90.2%) and lowest (2009, 88.1%) 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 Bonneville America 865 reliability, failures and mileage · ranked #1332 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird