BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

HONDA GL1800

1800cc Petrol Class 2
#433 of 5426 overall #51 of 921 HONDAs #267 of 2787 other bikes
92.2%
first-time pass rate
5.6%
failed outright
27,870
median miles at test
2,136
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2025

The GL1800's first-time pass rate has risen 1.4 points since 2006, 90.4% to 91.8%.

84%91%99%2006: 90.4% pass (52 tests)2007: 94.4% pass (71 tests)2008: 93.5% pass (77 tests)2009: 89.8% pass (98 tests)2010: 86.3% pass (102 tests)2011: 95.6% pass (113 tests)2012: 86.9% pass (130 tests)2013: 93.0% pass (143 tests)2014: 93.7% pass (142 tests)2015: 93.7% pass (142 tests)2016: 92.1% pass (140 tests)2017: 93.0% pass (128 tests)2018: 90.7% pass (97 tests)2019: 93.4% pass (91 tests)2020: 92.2% pass (77 tests)2021: 91.0% pass (111 tests)2022: 95.5% pass (111 tests)2023: 96.6% pass (116 tests)2024: 88.3% pass (94 tests)2025: 91.8% pass (97 tests)20062025

Pass rate by mileage

how the GL1800's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GL1800 passes first time 94.5% of the time; by 50k that's 92.4%.

87%91%96%0k: 94.5% pass (235 tests)10k: 92.8% pass (475 tests)20k: 92.4% pass (445 tests)30k: 92.5% pass (388 tests)40k: 88.2% pass (238 tests)50k: 92.4% pass (157 tests)0k30k50k

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a GL1800

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
43 22.3 0.4×
steering and suspension
39 20.2 0.5×
tyres and wheels
35 18.1 0.6×
lighting and signalling
30 15.5 0.3×
tyres
14 7.3 0.5×
lamps and reflectors
9 4.7 0.2×
suspension
9 4.7 0.4×
reg plates and vin
5 2.6 0.3×
steering
5 2.6 0.6×
driving controls
4 2.1 0.8×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the GL1800 beats 4 of its 4 closest rivals (SUZUKI GSX1400, SUZUKI GSX1300R, HONDA ST1300).

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the GL1800.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 2008 (95.9% pass). Weakest: 2005 (86.8%).

85%91%98%2001: 90.6% pass (245 tests)2002: 90.5% pass (222 tests)2003: 92.8% pass (389 tests)2004: 93.6% pass (218 tests)2005: 86.8% pass (204 tests)2006: 90.8% pass (163 tests)2007: 94.7% pass (152 tests)2008: 95.9% pass (121 tests)2009: 93.6% pass (156 tests)2010: 92.9% pass (85 tests)200120062010

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.

HONDA GL1800 FAQ

answers computed from the data above · terms in the glossary

Is the HONDA GL1800 reliable?

The HONDA GL1800 is more reliable than average for its class: 92.2% of its 2,136 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #433 of 5426 models.

What does a GL1800 fail its MOT on most?

brakes — 22% of all defects recorded against failed GL1800 tests.

What is the best year of GL1800 to buy used?

By first-time pass rate, 2008-registered examples do best (95.9%) and 2005 worst (86.8%). Condition and history still trump the year.

How many miles will a GL1800 last?

The median GL1800 shows 27,870 miles at test, and examples around 50k miles still pass 92.4% of the time — mileage alone rarely kills one.