Huoniao HN: MOT pass rate by registration year

Which HN years pass first time, and which fall short of the model's 60.9% average, from 937 DVSA tests.

2012

highest-passing year · 69.5%

2016

lowest-passing year · 54.2%

15.3pp

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: 2012 (69.5% of 95 tests). Lowest: 2016 (54.2% of 120). Years more than two points below the model average: 2016.

Registered	Tests	First-time pass	vs model (60.9%)
2012	95	69.5%	+8.6 pp
2013	88	65.9%	+5.0 pp
2014	237	67.1%	+6.2 pp
2015	229	59.0%	-1.9 pp
2016	120	54.2%	-6.7 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 HN years have the lowest MOT pass rate?: 2016 registered examples pass first time less often than the Huoniao HN overall (60.9%); the 2016 cohort is lowest at 54.2% from 120 tests.
Which HN year has the highest MOT pass rate?: 2012, at 69.5% of 95 first tests (2005–2025). Years more than two points above the model average: 2012, 2013, 2014.
How much does the HN pass rate vary by year?: 15.3 percentage points between the highest (2012, 69.5%) and lowest (2016, 54.2%) 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: Huoniao HN reliability, failures and mileage · ranked #5184 of 5428 models· other Huoniao models: HN 125-8, HN125