Triumph Bonneville Scrambler: MOT pass rate by registration year

Which Bonneville Scrambler years pass first time, and which fall short of the model's 84.5% average, from 1,693 DVSA tests.

2008

highest-passing year · 90.3%

2006

lowest-passing year · 79.4%

10.9pp

spread across 7 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: 2008 (90.3% of 216 tests). Lowest: 2006 (79.4% of 257). Years more than two points below the model average: 2006, 2012.

Registered	Tests	First-time pass	vs model (84.5%)
2006	257	79.4%	-5.1 pp
2007	164	85.4%	+0.9 pp
2008	216	90.3%	+5.8 pp
2009	260	86.2%	+1.7 pp
2010	230	85.2%	+0.7 pp
2011	346	85.3%	+0.8 pp
2012	185	80.5%	-4.0 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 · 2010–2025

Questions

Which Bonneville Scrambler years have the lowest MOT pass rate?: 2006, 2012 registered examples pass first time less often than the Triumph Bonneville Scrambler overall (84.5%); the 2006 cohort is lowest at 79.4% from 257 tests.
Which Bonneville Scrambler year has the highest MOT pass rate?: 2008, at 90.3% of 216 first tests (2005–2025).
How much does the Bonneville Scrambler pass rate vary by year?: 10.9 percentage points between the highest (2008, 90.3%) and lowest (2006, 79.4%) 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 Scrambler reliability, failures and mileage · ranked #2613 of 5428 models· other Triumph models: Bonneville, Tiger, Sprint, Daytona, Speed Triple, Thunderbird