Generic Code: MOT pass rate by registration year

Which Code years pass first time, and which fall short of the model's 65.8% average, from 1,318 DVSA tests.

2017

highest-passing year · 78.2%

2014

lowest-passing year · 61.3%

16.9pp

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: 2017 (78.2% of 133 tests). Lowest: 2014 (61.3% of 561). Years more than two points below the model average: 2014, 2015.

Registered	Tests	First-time pass	vs model (65.8%)
2014	561	61.3%	-4.5 pp
2015	331	63.7%	-2.1 pp
2016	268	70.1%	+4.3 pp
2017	133	78.2%	+12.4 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 · 2017–2025

Questions

Which Code years have the lowest MOT pass rate?: 2014, 2015 registered examples pass first time less often than the Generic Code overall (65.8%); the 2014 cohort is lowest at 61.3% from 561 tests.
Which Code year has the highest MOT pass rate?: 2017, at 78.2% of 133 first tests (2005–2025). Years more than two points above the model average: 2016, 2017.
How much does the Code pass rate vary by year?: 16.9 percentage points between the highest (2017, 78.2%) and lowest (2014, 61.3%) 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: Generic Code reliability, failures and mileage · ranked #4979 of 5428 models· other Generic models: Cracker, Xor, Trigger SM 50, Worx 125, Race 50, Trigger