Data as of: DVSA MOT results to 2025
Harley-Davidson Flstf Fat Boy: MOT pass rate by registration year
Which Flstf Fat Boy years pass first time, and which fall short of the model's 87.6% average, from 1,407 DVSA tests.
Pass rate by registration year
Highest pass rate: 2009 (94.0% of 50 tests). Lowest: 2006 (84.9% of 403). Years more than two points below the model average: 2006.
| Registered | Tests | First-time pass | vs model (87.6%) |
|---|---|---|---|
| 2006 | 403 | 84.9% | -2.7 pp |
| 2007 | 442 | 90.7% | +3.1 pp |
| 2008 | 260 | 89.6% | +2.0 pp |
| 2009 | 50 | 94.0% | +6.4 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
Questions
- Which Flstf Fat Boy years have the lowest MOT pass rate?
- 2006 registered examples pass first time less often than the Harley-Davidson Flstf Fat Boy overall (87.6%); the 2006 cohort is lowest at 84.9% from 403 tests.
- Which Flstf Fat Boy year has the highest MOT pass rate?
- 2009, at 94.0% of 50 first tests (2005–2025). Years more than two points above the model average: 2007, 2009.
- How much does the Flstf Fat Boy pass rate vary by year?
- 9.1 percentage points between the highest (2009, 94.0%) and lowest (2006, 84.9%) 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 Fat Boy reliability, failures and mileage · ranked #1725 of 5428 models· other Harley-Davidson models: XLH 883, Flstf, Flstc, XL, XL1200C, XL883