Vulcan Custom: MOT pass rate by registration year

Which Custom years pass first time, and which fall short of the model's 56.1% average, from 930 DVSA tests.

2005

highest-passing year · 63.3%

2004

lowest-passing year · 51.3%

12.0pp

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: 2005 (63.3% of 196 tests). Lowest: 2004 (51.3% of 398). Years more than two points below the model average: 2004.

Registered	Tests	First-time pass	vs model (56.1%)
2003	270	57.8%	+1.7 pp
2004	398	51.3%	-4.8 pp
2005	196	63.3%	+7.2 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 · 2006–2016

Questions

Which Custom years have the lowest MOT pass rate?: 2004 registered examples pass first time less often than the Vulcan Custom overall (56.1%); the 2004 cohort is lowest at 51.3% from 398 tests.
Which Custom year has the highest MOT pass rate?: 2005, at 63.3% of 196 first tests (2005–2025).
How much does the Custom pass rate vary by year?: 12.0 percentage points between the highest (2005, 63.3%) and lowest (2004, 51.3%) 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: Vulcan Custom reliability, failures and mileage · ranked #5326 of 5428 models· other Vulcan models: Harrier, V 50 R