Harley-Davidson Flstsci: MOT pass rate by registration year

Which Flstsci years pass first time, and which fall short of the model's 92.6% average, from 612 DVSA tests.

2004

highest-passing year · 95.1%

2005

lowest-passing year · 90.6%

4.5pp

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: 2004 (95.1% of 163 tests). Lowest: 2005 (90.6% of 181).

Registered	Tests	First-time pass	vs model (92.6%)
2001	54	92.6%	+0.0 pp
2004	163	95.1%	+2.5 pp
2005	181	90.6%	-2.0 pp
2006	131	91.6%	-1.0 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 · 2008–2023

Questions

Which Flstsci years have the lowest MOT pass rate?: none: no registration year of the Harley-Davidson Flstsci falls more than two points under the model's 92.6% overall pass rate.
Which Flstsci year has the highest MOT pass rate?: 2004, at 95.1% of 163 first tests (2005–2025).
How much does the Flstsci pass rate vary by year?: 4.5 percentage points between the highest (2004, 95.1%) and lowest (2005, 90.6%) 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 Flstsci reliability, failures and mileage · ranked #367 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883