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League table/ BUELL/XB 12 SCG LIGHTNING
Model report · 2005–2025

BUELL XB 12 SCG LIGHTNING

1203cc Petrol Class 2
#1695 of 5428 overall #4 of 23 BUELLs #1025 of 2788 other bikes
87.7%
first-time pass rate
4.5%
failed outright
7,128
median miles at test
555
MOT tests, 2005–2025
+0.2pp
vs expected · age & mileage

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

Pass rate over time

first-time pass rate by test year · 2011–2021

The XB 12 SCG LIGHTNING's first-time pass rate has risen 17.2 points since 2011, 76.3% to 93.5%.

72%85%98%2011: 76.3% pass (38 tests)2012: 81.8% pass (55 tests)2013: 88.7% pass (53 tests)2014: 91.3% pass (46 tests)2015: 88.4% pass (43 tests)2016: 88.9% pass (45 tests)2017: 82.2% pass (45 tests)2021: 93.5% pass (31 tests)20112021

Pass rate by mileage

how the XB 12 SCG LIGHTNING's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage XB 12 SCG LIGHTNING passes first time 91.2% of the time; by 20k that's 76.7%.

74%84%94%0k: 91.2% pass (375 tests)10k: 80.3% pass (137 tests)20k: 76.7% pass (30 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 XB 12 SCG LIGHTNING

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
14 32.6 0.4×
lamps and reflectors
7 16.3 0.3×
reg plates and vin
5 11.6 1.6×
tyres and wheels
4 9.3 0.3×
brakes
4 9.3 0.2×
steering and suspension
4 9.3 0.2×
tyres
2 4.7 0.5×
body and structure
1 2.3 0.4×
audible warning (Horn)
1 2.3 1.0×
steering
1 2.3 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 XB 12 SCG LIGHTNING beats 2 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).

BMW R1200 92.9% pass · 299k tests Compare head-to-head →
BMW R1150 88.5% pass · 171k tests Compare head-to-head →
TRIUMPH SPRINT 85.6% pass · 133k tests Compare head-to-head →
SUZUKI GSF1200 82.4% pass · 97.6k tests Compare head-to-head →

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 XB 12 SCG LIGHTNING.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the XB 12 SCG Lightning

More BUELL models

other BUELL bikes ranked by MOT pass rate
BUELL XB12S 86.2% pass · 5,087 tests
BUELL S1 86.1% pass · 3,738 tests
BUELL M2 86.5% pass · 3,474 tests
BUELL XB12R 85.6% pass · 3,048 tests
BUELL XB9R 83.7% pass · 2,610 tests
BUELL X1 86.7% pass · 2,424 tests

See all BUELL models →

Pass rate by registration year

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

Best year to buy used: 2008 (92.6% pass). Weakest: 2007 (83.8%).

82%88%94%2007: 83.8% pass (198 tests)2008: 92.6% pass (215 tests)2009: 85.8% pass (134 tests)200720082009

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 XB 12 SCG LIGHTNING FAQ

answers computed from the data above · terms in the glossary

Is the BUELL XB 12 SCG LIGHTNING reliable?

The BUELL XB 12 SCG LIGHTNING is more reliable than average for its class: 87.7% of its 555 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #1695 of 5428 models.

What does a XB 12 SCG LIGHTNING fail its MOT on most?

lighting and signalling — 33% of all defects recorded against failed XB 12 SCG LIGHTNING tests.

What is the best year of XB 12 SCG LIGHTNING to buy used?

By first-time pass rate, 2008-registered examples do best (92.6%) and 2007 worst (83.8%). Condition and history still trump the year.

How many miles will a XB 12 SCG LIGHTNING last?

The median XB 12 SCG LIGHTNING shows 7,128 miles at test, and examples around 20k miles still pass 76.7% of the time — mileage alone rarely kills one.

Embed this bike

Free to embed on your site, blog or forum — a live Buell XB 12 SCG Lightning reliability card that stays up to date and links back here. More on the free API page.