HARLEY-DAVIDSON FXDBI
Pass rate over time
The FXDBI's first-time pass rate has risen 3.9 points since 2009, 86.6% to 90.5%.
Pass rate by mileage
A low-mileage FXDBI passes first time 88.6% of the time; by 50k that's 90.0%.
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 FXDBI
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
65 | 20.4 | 0.4× |
| lamps and reflectors |
|
52 | 16.4 | 0.8× |
| reg plates and vin |
|
49 | 15.4 | 1.9× |
| brakes |
|
41 | 12.9 | 0.3× |
| fuel and exhaust |
|
29 | 9.1 | 1.1× |
| tyres and wheels |
|
27 | 8.5 | 0.4× |
| steering and suspension |
|
18 | 5.7 | 0.2× |
| Identification of the vehicle |
|
17 | 5.3 | 2.3× |
| tyres |
|
11 | 3.5 | 0.4× |
| steering |
|
9 | 2.8 | 0.7× |
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 FXDBI 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 FXDBI.
Pass rate by registration year
Best year to buy used: 2006 (87.8% pass). Weakest: 2005 (82.3%).
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 FXDBI FAQ
Is the HARLEY-DAVIDSON FXDBI reliable?
The HARLEY-DAVIDSON FXDBI is more reliable than average for its class: 87.2% of its 3,189 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1854 of 5426 models.
What does a FXDBI fail its MOT on most?
lighting and signalling — 20% of all defects recorded against failed FXDBI tests.
What is the best year of FXDBI to buy used?
By first-time pass rate, 2006-registered examples do best (87.8%) and 2005 worst (82.3%). Condition and history still trump the year.
How many miles will a FXDBI last?
The median FXDBI shows 12,562 miles at test, and examples around 50k miles still pass 90.0% of the time — mileage alone rarely kills one.