Norton Classic: MOT pass rate by registration year

Which Classic years pass first time, and which fall short of the model's 94.1% average, from 826 DVSA tests.

1961

highest-passing year · 96.2%

1971

lowest-passing year · 92.6%

3.6pp

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: 1961 (96.2% of 53 tests). Lowest: 1971 (92.6% of 54).

Registered	Tests	First-time pass	vs model (94.1%)
1961	53	96.2%	+2.1 pp
1971	54	92.6%	-1.5 pp
1988	226	94.2%	+0.1 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 · 2006–2017

Questions

Which Classic years have the lowest MOT pass rate?: none: no registration year of the Norton Classic falls more than two points under the model's 94.1% overall pass rate.
Which Classic year has the highest MOT pass rate?: 1961, at 96.2% of 53 first tests (2005–2025).
How much does the Classic pass rate vary by year?: 3.6 percentage points between the highest (1961, 96.2%) and lowest (1971, 92.6%) 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: Norton Classic reliability, failures and mileage · ranked #153 of 5428 models· other Norton models: Commando, Dominator, ES2, Commander, Triton, Atlas