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

HONDA C90M

85cc Petrol Class 1
#3997 of 5426 overall #760 of 921 HONDAs #167 of 734 commuter bikes
77.4%
first-time pass rate
14.5%
failed outright
16,613
median miles at test
974
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2015

The C90M's first-time pass rate has risen 17.6 points since 2005, 69.1% to 86.7%.

65%78%91%2005: 69.1% pass (55 tests)2006: 73.9% pass (157 tests)2007: 70.9% pass (148 tests)2008: 73.6% pass (110 tests)2009: 75.3% pass (73 tests)2010: 84.8% pass (46 tests)2011: 80.0% pass (45 tests)2012: 71.8% pass (39 tests)2013: 72.2% pass (36 tests)2014: 85.3% pass (34 tests)2015: 86.7% pass (30 tests)20052015

Pass rate by mileage

how the C90M's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage C90M passes first time 82.0% of the time; by 40k that's 65.6%.

62%74%85%0k: 82.0% pass (233 tests)10k: 80.3% pass (380 tests)20k: 74.7% pass (198 tests)30k: 69.4% pass (98 tests)40k: 65.6% pass (32 tests)0k20k40k

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 C90M

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
123 30.4 1.8×
steering and suspension
95 23.5 2.0×
tyres and wheels
72 17.8 3.1×
brakes
57 14.1 1.0×
drive system
24 5.9 2.8×
fuel and exhaust
10 2.5 0.8×
body and structure
9 2.2 1.9×
lamps and reflectors
8 2 0.3×
reg plates and vin
4 1 0.7×
wheels
3 0.7 5.1×

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 C90M beats 2 of its 4 closest rivals (HONDA C90, HONDA SCV100, YAMAHA YQ100).

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 C90M.

Pass rate by registration year

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

Best year to buy used: 2002 (83.9% pass). Weakest: 2001 (67.7%).

64%76%87%1985: 78.9% pass (76 tests)1986: 74.8% pass (103 tests)1997: 78.4% pass (111 tests)1998: 73.9% pass (161 tests)1999: 80.2% pass (121 tests)2000: 79.7% pass (138 tests)2001: 67.7% pass (99 tests)2002: 83.9% pass (93 tests)198519992002

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 C90M FAQ

answers computed from the data above · terms in the glossary

Is the HONDA C90M reliable?

The HONDA C90M is more reliable than average for its class: 77.4% of its 974 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3997 of 5426 models.

What does a C90M fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed C90M tests.

What is the best year of C90M to buy used?

By first-time pass rate, 2002-registered examples do best (83.9%) and 2001 worst (67.7%). Condition and history still trump the year.

How many miles will a C90M last?

The median C90M shows 16,613 miles at test, and examples around 40k miles still pass 65.6% of the time — mileage alone rarely kills one.