HARLEY-DAVIDSON FXDB
Pass rate over time
The FXDB's first-time pass rate has held steady since 2009 (87.3% → 87.8%).
Pass rate by mileage
A low-mileage FXDB passes first time 89.0% of the time; by 50k that's 76.1%.
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 FXDB
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
222 | 31.1 | 1.1× |
| lighting and signalling |
|
119 | 16.7 | 0.2× |
| brakes |
|
79 | 11.1 | 0.2× |
| reg plates and vin |
|
65 | 9.1 | 1.0× |
| fuel and exhaust |
|
42 | 5.9 | 0.6× |
| suspension |
|
40 | 5.6 | 0.5× |
| tyres and wheels |
|
39 | 5.5 | 0.2× |
| tyres |
|
38 | 5.3 | 0.6× |
| Identification of the vehicle |
|
35 | 4.9 | 1.7× |
| structure and attachments |
|
35 | 4.9 | 0.5× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the FXDB beats 0 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 FXDB.
Pass rate by registration year
Best year to buy used: 2013 (91.3% pass). Weakest: 2012 (83.2%).
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.
HARLEY-DAVIDSON FXDB FAQ
Is the HARLEY-DAVIDSON FXDB reliable?
The HARLEY-DAVIDSON FXDB is more reliable than average for its class: 88.3% of its 8,694 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1506 of 5426 models.
What does a FXDB fail its MOT on most?
lamps and reflectors — 31% of all defects recorded against failed FXDB tests.
What is the best year of FXDB to buy used?
By first-time pass rate, 2013-registered examples do best (91.3%) and 2012 worst (83.2%). Condition and history still trump the year.
How many miles will a FXDB last?
The median FXDB shows 9,975 miles at test, and examples around 50k miles still pass 76.1% of the time — mileage alone rarely kills one.