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

BUELL XB12S

1203cc Petrol Class 2
#2146 of 5426 overall #11 of 23 BUELLs #1324 of 2787 other bikes
86.2%
first-time pass rate
6.7%
failed outright
8,538
median miles at test
5,087
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The XB12S's first-time pass rate has held steady since 2006 (91.5% → 90.6%).

75%85%95%2006: 91.5% pass (47 tests)2007: 83.6% pass (177 tests)2008: 82.9% pass (287 tests)2009: 78.4% pass (324 tests)2010: 80.0% pass (370 tests)2011: 81.3% pass (401 tests)2012: 82.4% pass (404 tests)2013: 87.4% pass (381 tests)2014: 85.9% pass (334 tests)2015: 90.1% pass (292 tests)2016: 91.8% pass (280 tests)2017: 92.0% pass (263 tests)2018: 91.9% pass (197 tests)2019: 88.3% pass (197 tests)2020: 87.5% pass (176 tests)2021: 89.6% pass (221 tests)2022: 89.6% pass (212 tests)2023: 87.4% pass (207 tests)2024: 90.5% pass (158 tests)2025: 90.6% pass (159 tests)20062025

Pass rate by mileage

how the XB12S's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage XB12S passes first time 87.9% of the time; by 30k that's 78.5%.

77%83%90%0k: 87.9% pass (2,972 tests)10k: 84.2% pass (1,535 tests)20k: 84.8% pass (429 tests)30k: 78.5% pass (79 tests)0k20k30k

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 XB12S

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
190 30.7 0.7×
steering and suspension
76 12.3 0.4×
lamps and reflectors
74 12 0.7×
brakes
65 10.5 0.3×
tyres and wheels
57 9.2 0.5×
reg plates and vin
57 9.2 1.2×
body and structure
33 5.3 0.9×
structure and attachments
29 4.7 0.6×
fuel and exhaust
20 3.2 0.5×
suspension
17 2.8 0.4×

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 XB12S beats 2 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).

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 XB12S.

Pass rate by registration year

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

Best year to buy used: 2009 (92.9% pass). Weakest: 2005 (81.7%).

79%87%95%2003: 86.7% pass (645 tests)2004: 86.6% pass (1,192 tests)2005: 81.7% pass (774 tests)2006: 85.7% pass (588 tests)2007: 84.3% pass (682 tests)2008: 87.3% pass (607 tests)2009: 92.9% pass (490 tests)2010: 90.4% pass (94 tests)200320072010

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.

BUELL XB12S FAQ

answers computed from the data above · terms in the glossary

Is the BUELL XB12S reliable?

The BUELL XB12S is about average for its class: 86.2% of its 5,087 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2146 of 5426 models.

What does a XB12S fail its MOT on most?

lighting and signalling — 31% of all defects recorded against failed XB12S tests.

What is the best year of XB12S to buy used?

By first-time pass rate, 2009-registered examples do best (92.9%) and 2005 worst (81.7%). Condition and history still trump the year.

How many miles will a XB12S last?

The median XB12S shows 8,538 miles at test, and examples around 30k miles still pass 78.5% of the time — mileage alone rarely kills one.