HONDA CB450DX-K

447cc Petrol Class 2

#4210 of 5426 overall #800 of 921 HONDAs #192 of 205 naked bikes

75.8%

first-time pass rate

14.8%

failed outright

29,705

median miles at test

244

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2008

The CB450DX-K's first-time pass rate has fallen 12.3 points since 2006, 86.5% to 74.2%.

Pass rate by mileage

how the CB450DX-K's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage CB450DX-K passes first time 80.5% of the time; by 30k that's 75.0%.

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 CB450DX-K

failure defects by component group · advisories excluded

Component group	Defects	% of defects
brakes	28	26.7
lighting and signalling	21	20
steering and suspension	16	15.2
tyres and wheels	13	12.4
body and structure	7	6.7
drive system	5	4.8
suspension	5	4.8
structure and attachments	4	3.8
tyres	3	2.9
lamps and reflectors	3	2.9

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 CB450DX-K beats 0 of its 3 closest rivals (HONDA CB500, HONDA CB400, HONDA CB400N).

HONDA CB500 83.3% pass · 105k tests HONDA CB400 80.9% pass · 9,072 tests HONDA CB400N 77.5% pass · 5,366 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 CB450DX-K.

Pass rate by registration year

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

Best year to buy used: 1990 (76.7% pass). Weakest: 1989 (73.0%).

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.