Rieju RS: MOT pass rate by registration year

Which RS years pass first time, and which fall short of the model's 60.4% average, from 988 DVSA tests.

2017

highest-passing year · 69.9%

2013

lowest-passing year · 52.2%

17.7pp

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: 2017 (69.9% of 93 tests). Lowest: 2013 (52.2% of 67). Years more than two points below the model average: 2013, 2016.

Registered	Tests	First-time pass	vs model (60.4%)
2013	67	52.2%	-8.2 pp
2014	345	63.8%	+3.4 pp
2015	190	58.9%	-1.5 pp
2016	185	54.6%	-5.8 pp
2017	93	69.9%	+9.5 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 RS years have the lowest MOT pass rate?: 2013, 2016 registered examples pass first time less often than the Rieju RS overall (60.4%); the 2013 cohort is lowest at 52.2% from 67 tests.
Which RS year has the highest MOT pass rate?: 2017, at 69.9% of 93 first tests (2005–2025). Years more than two points above the model average: 2014, 2017.
How much does the RS pass rate vary by year?: 17.7 percentage points between the highest (2017, 69.9%) and lowest (2013, 52.2%) 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: Rieju RS reliability, failures and mileage · ranked #5201 of 5428 models· other Rieju models: MRT, RS2, Marathon, MRT 50, RS2 50, RR 50