Honda ST1100T vs Suzuki GSF1200

The Honda ST1100T passes its MOT first time more often than the Suzuki GSF1200: 84.2% vs 82.4%, a 1.8-point lead.

MOT reliability, side by side

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

Metric	Honda ST1100T	Suzuki GSF1200
First-time pass rate	84.2%	82.4%
Outright fail rate	12.0%	8.9%
Vs comparable bikes (age & mileage adjusted)	+4.2 pts	-1.2 pts
Engine size	1,085cc	1,157cc
Rank among all models	#2690 of 5428	#3108 of 5428
Median miles at test	45,076	20,274
MOT tests analysed	819	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.

What fails, side by side

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

Component	Honda ST1100T	Suzuki GSF1200
Brakes	5.1%	2.8%
Steering & suspension	4.8%	2.2%
Lights & signalling	2.4%	4.5%
Tyres & wheels	3.1%	2.0%
Fuel & exhaust	1.2%	0.8%
Structure & body	0.6%	0.8%
Drive system	0.2%	0.6%

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	Honda ST1100T	Suzuki GSF1200
2012	81.7%	80.7%
2013	78.4%	80.2%
2014	94.2%	81.0%
2015	84.6%	81.9%
2016	78.3%	82.2%
2017	79.5%	82.9%
2018	89.2%	83.2%
2019	90.9%	82.9%

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 ST1100T	Suzuki GSF1200
10k-20k miles	95.2%	83.8%
20k-30k miles	90.6%	81.1%
30k-40k miles	76.9%	78.5%
40k-50k miles	78.8%	78.4%
50k-60k miles	82.2%	78.8%

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

Honda ST1100T vs Suzuki GSF1200 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Honda ST1100T or the Suzuki GSF1200?

The Honda ST1100T passes its MOT first time more often than the Suzuki GSF1200: 84.2% vs 82.4%, a 1.8-point lead. Adjusted for age, mileage and test class, the Honda ST1100T still comes out ahead: +4.2 points vs comparable bikes for the Honda ST1100T, -1.2 for the Suzuki GSF1200. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Honda ST1100T fail its MOT on most?

Brakes: 5.1% of Honda ST1100T MOT tests failed on it, then steering & suspension (4.8%).

What does the Suzuki GSF1200 fail its MOT on most?

Lights & signalling: 4.5% of Suzuki GSF1200 MOT tests failed on it, then brakes (2.8%).

Which holds up better at high mileage, the Honda ST1100T or the Suzuki GSF1200?

At 50k-60k miles the Honda ST1100T passes first time more often: 82.2% for the Honda ST1100T vs 78.8% for the Suzuki GSF1200.

HONDA ST1100T 84.2% pass · 819 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.