Harley-Davidson Flstc Heritage STC 1584 09: MOT pass rate by registration year

Which Flstc Heritage STC 1584 09 years pass first time, and which fall short of the model's 88.7% average, from 1,267 DVSA tests.

2010

highest-passing year · 88.7%

2008

lowest-passing year · 88.6%

0.1pp

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: 2010 (88.7% of 648 tests). Lowest: 2008 (88.6% of 123).

Registered	Tests	First-time pass	vs model (88.7%)
2008	123	88.6%	-0.1 pp
2009	485	88.7%	+0.0 pp
2010	648	88.7%	+0.0 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 · 2012–2025

Questions

Which Flstc Heritage STC 1584 09 years have the lowest MOT pass rate?: none: no registration year of the Harley-Davidson Flstc Heritage STC 1584 09 falls more than two points under the model's 88.7% overall pass rate.
Which Flstc Heritage STC 1584 09 year has the highest MOT pass rate?: 2010, at 88.7% of 648 first tests (2005–2025).
How much does the Flstc Heritage STC 1584 09 pass rate vary by year?: 0.1 percentage points between the highest (2010, 88.7%) and lowest (2008, 88.6%) 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 Flstc Heritage STC 1584 09 reliability, failures and mileage · ranked #1370 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883