Buell X1 vs BMW R1200

The BMW R1200 passes its MOT first time more often than the Buell X1: 92.9% vs 86.7%, a 6.2-point lead.

MOT reliability, side by side

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

Metric	Buell X1	BMW R1200
First-time pass rate	86.7%	92.9%
Outright fail rate	6.2%	3.7%
Vs comparable bikes (age & mileage adjusted)	+1.2 pts	+8.6 pts
Engine size	1,200cc	1,170cc
Rank among all models	#1985 of 5428	#315 of 5428
Median miles at test	12,730	20,069
MOT tests analysed	2,424	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.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Buell X1	BMW R1200
Lights & signalling	3.1%	0.9%
Brakes	1.4%	1.5%
Steering & suspension	1.8%	0.7%
Tyres & wheels	1.2%	1.0%
Fuel & exhaust	0.6%	0.0%
Structure & body	0.3%	0.1%
Drive system	0.1%	0%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Buell X1	BMW R1200
2018	88.3%	93.0%
2019	87.0%	93.6%
2020	88.5%	94.0%
2021	95.2%	93.9%
2022	82.4%	93.8%
2023	94.1%	94.1%
2024	92.0%	94.0%
2025	92.2%	94.2%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

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

Mileage	Buell X1	BMW R1200
0k-10k miles	87.4%	94.8%
10k-20k miles	85.6%	93.7%
20k-30k miles	88.0%	92.8%
30k-40k miles	82.7%	91.9%
40k-50k miles	90.6%	90.8%

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

Buell X1 vs BMW R1200 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Buell X1 or the BMW R1200?

The BMW R1200 passes its MOT first time more often than the Buell X1: 92.9% vs 86.7%, a 6.2-point lead. Adjusted for age, mileage and test class, the BMW R1200 still comes out ahead: +1.2 points vs comparable bikes for the Buell X1, +8.6 for the BMW R1200. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Buell X1 fail its MOT on most?

Lights & signalling: 3.1% of Buell X1 MOT tests failed on it, then steering & suspension (1.8%).

What does the BMW R1200 fail its MOT on most?

Brakes: 1.5% of BMW R1200 MOT tests failed on it, then tyres & wheels (1.0%).

Which holds up better at high mileage, the Buell X1 or the BMW R1200?

They are level: at 40k-50k miles the Buell X1 passes 90.6% first time and the BMW R1200 90.8%.

BUELL X1 86.7% pass · 2,424 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.