Pass rate over time
The CUSTOM's first-time pass rate has fallen 17.4 points since 2006, 78.7% to 61.3%.
Pass rate by mileage
A low-mileage CUSTOM passes first time 59.7% of the time; by 20k that's 66.7%.
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 CUSTOM
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
410 | 38.8 | 5.2× |
| steering and suspension |
|
187 | 17.7 | 4.6× |
| brakes |
|
178 | 16.8 | 3.1× |
| drive system |
|
98 | 9.3 | 10.0× |
| fuel and exhaust |
|
55 | 5.2 | 6.2× |
| body and structure |
|
49 | 4.6 | 8.5× |
| tyres and wheels |
|
28 | 2.6 | 1.5× |
| lamps and reflectors |
|
26 | 2.5 | 0.8× |
| driving controls |
|
14 | 1.3 | 5.5× |
| reg plates and vin |
|
12 | 1.1 | 2.1× |
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 CUSTOM beats 0 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).
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 CUSTOM.
Pass rate by registration year
Best year to buy used: 2005 (63.3% pass). Weakest: 2004 (51.3%).
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.
VULCAN CUSTOM FAQ
Is the VULCAN CUSTOM reliable?
The VULCAN CUSTOM is less reliable than average for its class: 56.1% of its 930 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5324 of 5426 models.
What does a CUSTOM fail its MOT on most?
lighting and signalling — 39% of all defects recorded against failed CUSTOM tests.
What is the best year of CUSTOM to buy used?
By first-time pass rate, 2005-registered examples do best (63.3%) and 2004 worst (51.3%). Condition and history still trump the year.
How many miles will a CUSTOM last?
The median CUSTOM shows 6,494 miles at test, and examples around 20k miles still pass 66.7% of the time — mileage alone rarely kills one.