Harley-Davidson Flstni Softail Deluxe: MOT pass rate by registration year

Which Flstni Softail Deluxe years pass first time, and which fall short of the model's 88.2% average, from 1,062 DVSA tests.

2004

highest-passing year · 89.9%

2006

lowest-passing year · 87.0%

2.9pp

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: 2004 (89.9% of 89 tests). Lowest: 2006 (87.0% of 276).

Registered	Tests	First-time pass	vs model (88.2%)
2004	89	89.9%	+1.7 pp
2005	641	88.1%	-0.1 pp
2006	276	87.0%	-1.2 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 · 2008–2025

Questions

Which Flstni Softail Deluxe years have the lowest MOT pass rate?: none: no registration year of the Harley-Davidson Flstni Softail Deluxe falls more than two points under the model's 88.2% overall pass rate.
Which Flstni Softail Deluxe year has the highest MOT pass rate?: 2004, at 89.9% of 89 first tests (2005–2025).
How much does the Flstni Softail Deluxe pass rate vary by year?: 2.9 percentage points between the highest (2004, 89.9%) and lowest (2006, 87.0%) 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 Flstni Softail Deluxe reliability, failures and mileage · ranked #1544 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883