HARLEY-DAVIDSON FLSTFB FATBOY SP 1690 12
Pass rate over time
The FLSTFB FATBOY SP 1690 12's first-time pass rate has risen 6.9 points since 2016, 83.7% to 90.6%.
Pass rate by mileage
A low-mileage FLSTFB FATBOY SP 1690 12 passes first time 92.4% of the time; by 20k that's 89.5%.
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 FLSTFB FATBOY SP 1690 12
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lamps and reflectors |
|
6 | 42.9 |
| tyres |
|
2 | 14.3 |
| tyres and wheels |
|
2 | 14.3 |
| structure and attachments |
|
1 | 7.1 |
| reg plates and vin |
|
1 | 7.1 |
| lighting and signalling |
|
1 | 7.1 |
| brakes |
|
1 | 7.1 |
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 FLSTFB FATBOY SP 1690 12 beats 4 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 FLSTFB FATBOY SP 1690 12.
Pass rate by registration year
Best year to buy used: 2011 (94.6% pass). Weakest: 2013 (87.5%).
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.