BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

VULCAN CUSTOM

124cc Petrol Class 1
#5324 of 5426 overall #1 of 2 VULCANs #685 of 734 commuter bikes
56.1%
first-time pass rate
30.8%
failed outright
6,494
median miles at test
930
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2016

The CUSTOM's first-time pass rate has fallen 17.4 points since 2006, 78.7% to 61.3%.

34%61%88%2006: 78.7% pass (47 tests)2007: 63.2% pass (114 tests)2008: 52.1% pass (121 tests)2009: 55.9% pass (102 tests)2010: 63.3% pass (90 tests)2011: 56.9% pass (102 tests)2012: 54.7% pass (75 tests)2013: 43.3% pass (67 tests)2014: 44.9% pass (49 tests)2015: 54.8% pass (42 tests)2016: 61.3% pass (31 tests)20062016

Pass rate by mileage

how the CUSTOM's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage CUSTOM passes first time 59.7% of the time; by 20k that's 66.7%.

39%55%71%0k: 59.7% pass (662 tests)10k: 44.0% pass (200 tests)20k: 66.7% pass (48 tests)0k10k20k

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

failure defects by component group · advisories excluded
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

same type, similar capacity, high test volume

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

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2005 (63.3% pass). Weakest: 2004 (51.3%).

49%57%66%2003: 57.8% pass (270 tests)2004: 51.3% pass (398 tests)2005: 63.3% pass (196 tests)200320042005

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

answers computed from the data above · terms in the glossary

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.