HONDA CM400

400cc Petrol Class 2

#4380 of 5426 overall #838 of 921 HONDAs #2695 of 2787 other bikes

74.2%

first-time pass rate

10.3%

failed outright

21,249

median miles at test

252

MOT tests, 2005–2025

Pass rate by mileage

how the CM400's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage CM400 passes first time 81.4% of the time; by 20k that's 74.0%.

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 CM400

failure defects by component group · advisories excluded

Component group	Defects	% of defects
steering and suspension	24	36.9
lighting and signalling	18	27.7
brakes	10	15.4
drive system	4	6.2
tyres and wheels	3	4.6
fuel and exhaust	2	3.1
steering	1	1.5
driving controls	1	1.5
structure and attachments	1	1.5
Identification of the vehicle	1	1.5

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the CM400 beats 0 of its 4 closest rivals (KAWASAKI ER5, SUZUKI GS500, SUZUKI AN400).

KAWASAKI ER5 77.4% pass · 53.1k tests SUZUKI GS500 76.4% pass · 44.9k tests SUZUKI AN400 86.2% pass · 27.1k tests SUZUKI DR-Z400S 80.4% pass · 26.8k tests

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 CM400.

Pass rate by registration year

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

Best year to buy used: 1980 (77.5% pass). Weakest: 1981 (72.6%).

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.