Harley-Davidson Flstf Fatboy 1690 12: MOT pass rate by registration year

Which Flstf Fatboy 1690 12 years pass first time, and which fall short of the model's 90.2% average, from 940 DVSA tests.

2011

highest-passing year · 91.0%

2013

lowest-passing year · 87.9%

3.1pp

spread across 3 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: 2011 (91.0% of 268 tests). Lowest: 2013 (87.9% of 116). Years more than two points below the model average: 2013.

Registered	Tests	First-time pass	vs model (90.2%)
2011	268	91.0%	+0.8 pp
2012	556	90.3%	+0.1 pp
2013	116	87.9%	-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 · 2015–2025

Questions

Which Flstf Fatboy 1690 12 years have the lowest MOT pass rate?: 2013 registered examples pass first time less often than the Harley-Davidson Flstf Fatboy 1690 12 overall (90.2%); the 2013 cohort is lowest at 87.9% from 116 tests.
Which Flstf Fatboy 1690 12 year has the highest MOT pass rate?: 2011, at 91.0% of 268 first tests (2005–2025).
How much does the Flstf Fatboy 1690 12 pass rate vary by year?: 3.1 percentage points between the highest (2011, 91.0%) and lowest (2013, 87.9%) 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: Harley-Davidson Flstf Fatboy 1690 12 reliability, failures and mileage · ranked #884 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883