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

HONDA C90

85cc Petrol Class 1
#3719 of 5426 overall #670 of 921 HONDAs #113 of 734 commuter bikes
HONDA C90
Photo: Rikita · CC BY-SA 4.0
79.3%
first-time pass rate
12.6%
failed outright
17,744
median miles at test
92.8k
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The C90's first-time pass rate has risen 10.8 points since 2005, 77.6% to 88.4%.

72%82%92%2005: 77.6% pass (2,504 tests)2006: 77.4% pass (9,559 tests)2007: 77.2% pass (8,269 tests)2008: 75.3% pass (7,608 tests)2009: 75.7% pass (6,795 tests)2010: 76.7% pass (6,215 tests)2011: 75.8% pass (6,051 tests)2012: 76.2% pass (5,557 tests)2013: 78.0% pass (5,098 tests)2014: 78.7% pass (4,741 tests)2015: 80.1% pass (4,307 tests)2016: 81.6% pass (3,905 tests)2017: 82.8% pass (3,558 tests)2018: 84.4% pass (2,512 tests)2019: 84.9% pass (2,451 tests)2020: 84.5% pass (2,225 tests)2021: 85.8% pass (2,693 tests)2022: 87.4% pass (2,552 tests)2023: 87.4% pass (2,442 tests)2024: 88.3% pass (1,776 tests)2025: 88.4% pass (1,954 tests)20052025

Pass rate by mileage

how the C90's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage C90 passes first time 85.7% of the time; by 50k that's 71.2%.

68%78%89%0k: 85.7% pass (20,361 tests)10k: 80.8% pass (32,245 tests)20k: 76.5% pass (22,199 tests)30k: 73.3% pass (9,981 tests)40k: 72.4% pass (3,986 tests)50k: 71.2% pass (1,718 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 C90

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
10,072 31.2 1.5×
steering and suspension
6,579 20.4 1.6×
tyres and wheels
4,941 15.3 2.1×
brakes
4,869 15.1 0.9×
drive system
1,670 5.2 2.0×
body and structure
1,404 4.4 2.6×
lamps and reflectors
1,155 3.6 0.4×
fuel and exhaust
820 2.5 1.1×
structure and attachments
391 1.2 0.5×
suspension
362 1.1 0.4×

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 C90 beats 3 of its 4 closest rivals (HONDA SCV100, YAMAHA YQ100, HONDA NHX 110 WH-8).

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 C90.

Pass rate by registration year

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

Best year to buy used: 1969 (89.1% pass). Weakest: 1972 (75.0%).

72%82%92%1969: 89.1% pass (55 tests)1970: 82.5% pass (57 tests)1971: 81.0% pass (384 tests)1972: 75.0% pass (52 tests)1973: 80.7% pass (88 tests)1974: 79.2% pass (77 tests)1975: 86.0% pass (164 tests)1976: 83.6% pass (220 tests)1977: 81.1% pass (180 tests)1978: 79.9% pass (323 tests)1979: 81.9% pass (562 tests)1980: 79.4% pass (725 tests)1981: 81.6% pass (559 tests)1982: 81.9% pass (553 tests)1983: 83.2% pass (941 tests)1984: 78.3% pass (2,225 tests)1985: 80.3% pass (3,427 tests)1986: 78.6% pass (3,910 tests)1987: 78.0% pass (4,726 tests)1988: 79.1% pass (5,437 tests)1989: 77.7% pass (5,476 tests)1990: 80.5% pass (5,124 tests)1991: 78.8% pass (4,694 tests)1992: 78.3% pass (4,249 tests)1993: 79.8% pass (4,021 tests)1994: 79.4% pass (3,231 tests)1995: 81.6% pass (3,247 tests)1996: 79.9% pass (5,261 tests)1997: 78.9% pass (6,030 tests)1998: 78.0% pass (5,744 tests)1999: 78.1% pass (5,400 tests)2000: 79.7% pass (4,949 tests)2001: 79.8% pass (5,660 tests)2002: 78.4% pass (3,870 tests)2003: 81.3% pass (784 tests)196919862003

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 C90 FAQ

answers computed from the data above · terms in the glossary

Is the HONDA C90 reliable?

The HONDA C90 is more reliable than average for its class: 79.3% of its 92,772 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3719 of 5426 models.

What does a C90 fail its MOT on most?

lighting and signalling — 31% of all defects recorded against failed C90 tests.

What is the best year of C90 to buy used?

By first-time pass rate, 1969-registered examples do best (89.1%) and 1972 worst (75.0%). Condition and history still trump the year.

How many miles will a C90 last?

The median C90 shows 17,744 miles at test, and examples around 50k miles still pass 71.2% of the time — mileage alone rarely kills one.