BMW C400: MOT pass rate by registration year

Which C400 years pass first time, and which fall short of the model's 95.1% average, from 1,126 DVSA tests.

2021

highest-passing year · 96.2%

2018

lowest-passing year · 93.3%

2.9pp

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: 2021 (96.2% of 105 tests). Lowest: 2018 (93.3% of 89).

Registered	Tests	First-time pass	vs model (95.1%)
2018	89	93.3%	-1.8 pp
2019	584	95.7%	+0.6 pp
2020	339	94.1%	-1.0 pp
2021	105	96.2%	+1.1 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 · 2022–2025

Questions

Which C400 years have the lowest MOT pass rate?: none: no registration year of the BMW C400 falls more than two points under the model's 95.1% overall pass rate.
Which C400 year has the highest MOT pass rate?: 2021, at 96.2% of 105 first tests (2005–2025).
How much does the C400 pass rate vary by year?: 2.9 percentage points between the highest (2021, 96.2%) and lowest (2018, 93.3%) 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: BMW C400 reliability, failures and mileage · ranked #67 of 5428 models· other BMW models: R1200, R1150, S1000, F800, K Series, K1200