Buell XB12STT Lightning Supertt vs BMW R1200

The BMW R1200 passes its MOT first time more often than the Buell XB12STT Lightning Supertt: 92.9% vs 79.4%, a 13.5-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Buell XB12STT Lightning Supertt	BMW R1200
First-time pass rate	79.4%	92.9%
Outright fail rate	10.9%	3.7%
Vs comparable bikes (age & mileage adjusted)	-7.7 pts	+8.6 pts
Engine size	1,203cc	1,170cc
Median miles at test	8,698	20,069
MOT tests analysed	175	299,381
Most common failure	lighting and signalling	brakes

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Buell XB12STT Lightning Supertt	BMW R1200
0k-10k miles	83.8%	94.8%
10k-20k miles	78.8%	93.7%

Bands with fewer than 30 tests for either bike are left out.

BUELL XB12STT LIGHTNING SUPERTT 79.4% pass · 175 tests BMW R1200 92.9% pass · 299k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.