Royal Enfield Bullet Classic Efi E4: MOT pass rate by registration year

Which Bullet Classic Efi E4 years pass first time, and which fall short of the model's 89.9% average, from 3,550 DVSA tests.

2020

highest-passing year · 92.3%

2021

lowest-passing year · 87.6%

4.7pp

spread across 5 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: 2020 (92.3% of 418 tests). Lowest: 2021 (87.6% of 97). Years more than two points below the model average: 2021.

Registered	Tests	First-time pass	vs model (89.9%)
2017	1,075	89.3%	-0.6 pp
2018	1,269	90.1%	+0.2 pp
2019	687	89.5%	-0.4 pp
2020	418	92.3%	+2.4 pp
2021	97	87.6%	-2.3 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 · 2020–2025

Questions

Which Bullet Classic Efi E4 years have the lowest MOT pass rate?: 2021 registered examples pass first time less often than the Royal Enfield Bullet Classic Efi E4 overall (89.9%); the 2021 cohort is lowest at 87.6% from 97 tests.
Which Bullet Classic Efi E4 year has the highest MOT pass rate?: 2020, at 92.3% of 418 first tests (2005–2025).
How much does the Bullet Classic Efi E4 pass rate vary by year?: 4.7 percentage points between the highest (2020, 92.3%) and lowest (2021, 87.6%) 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: Royal Enfield Bullet Classic Efi E4 reliability, failures and mileage · ranked #988 of 5428 models· other Royal Enfield models: Bullet 500, Interceptor Int 650, Bullet 350, Himalayan, Bullt, Bullet