Honda GL 1800 Da-K vs Suzuki GSX1400

The Honda GL 1800 Da-K passes its MOT first time more often than the Suzuki GSX1400: 95.9% vs 88.3%, a 7.6-point lead.

MOT reliability, side by side

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

Metric	Honda GL 1800 Da-K	Suzuki GSX1400
First-time pass rate	95.9%	88.3%
Outright fail rate	3.6%	5.5%
Vs comparable bikes (age & mileage adjusted)	+8.1 pts	+3.5 pts
Engine size	1,833cc	1,402cc
Median miles at test	9,663	15,787
MOT tests analysed	195	56,777
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 GL 1800 Da-K	Suzuki GSX1400
2023	94.7%	91.2%
2024	96.2%	92.0%
2025	95.4%	91.6%

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 GL 1800 Da-K	Suzuki GSX1400
0k-10k miles	97.1%	90.7%
10k-20k miles	94.4%	88.3%

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

HONDA GL 1800 DA-K 95.9% pass · 195 tests SUZUKI GSX1400 88.3% pass · 56.8k tests

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