Honda GL1200AH vs Suzuki GSF1200

The Suzuki GSF1200 passes its MOT first time more often than the Honda GL1200AH: 82.4% vs 78.3%, a 4.1-point lead.

MOT reliability, side by side

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

Metric	Honda GL1200AH	Suzuki GSF1200
First-time pass rate	78.3%	82.4%
Outright fail rate	16.1%	8.9%
Vs comparable bikes (age & mileage adjusted)	-2.5 pts	-1.2 pts
Engine size	1,182cc	1,157cc
Rank among all models	#3872 of 5428	#3108 of 5428
Median miles at test	53,072	20,274
MOT tests analysed	423	97,637
Most common failure	brakes	lighting and signalling

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 test year

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

Test year	Honda GL1200AH	Suzuki GSF1200
2006	89.1%	86.2%
2007	83.7%	84.3%
2008	81.3%	82.0%
2009	75.0%	80.3%
2010	64.9%	81.3%
2011	63.9%	80.2%

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	Honda GL1200AH	Suzuki GSF1200
20k-30k miles	88.9%	81.1%
30k-40k miles	83.6%	78.5%
40k-50k miles	77.8%	78.4%
50k-60k miles	86.3%	78.8%

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

HONDA GL1200AH 78.3% pass · 423 tests SUZUKI GSF1200 82.4% pass · 97.6k tests

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