HARLEY-DAVIDSON FLSTF FATBOY 1584 10
Pass rate over time
The FLSTF FATBOY 1584 10's first-time pass rate has held steady since 2014 (85.7% → 86.7%).
Pass rate by mileage
A low-mileage FLSTF FATBOY 1584 10 passes first time 89.0% of the time; by 20k that's 88.6%.
First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.
What fails on a FLSTF FATBOY 1584 10
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| brakes |
|
6 | 20.7 |
| lamps and reflectors |
|
5 | 17.2 |
| Identification of the vehicle |
|
3 | 10.3 |
| reg plates and vin |
|
3 | 10.3 |
| suspension |
|
3 | 10.3 |
| tyres |
|
3 | 10.3 |
| fuel and exhaust |
|
2 | 6.9 |
| lighting and signalling |
|
2 | 6.9 |
| steering |
|
1 | 3.4 |
| structure and attachments |
|
1 | 3.4 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
On first-time pass rate the FLSTF FATBOY 1584 10 beats 1 of its 4 closest rivals (HARLEY-DAVIDSON FLSTF, HARLEY-DAVIDSON FLSTC, HARLEY-DAVIDSON XL1200C).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the FLSTF FATBOY 1584 10.
Pass rate by registration year
Best year to buy used: 2010 (89.7% pass). Weakest: 2011 (85.1%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.