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

KAWASAKI KDX250

249cc Petrol Class 2
75.8%
first-time pass rate
15.8%
failed outright
12,870
median miles at test
285
MOT tests, 2005–2025

Pass rate by mileage

how the KDX250's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage KDX250 passes first time 73.5% of the time; by 20k that's 80.0%.

72%77%81%0k: 73.5% pass (102 tests)10k: 74.6% pass (71 tests)20k: 80.0% pass (60 tests)0k10k20k

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 KDX250

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
42 31.6
steering and suspension
25 18.8
brakes
21 15.8
reg plates and vin
12 9
tyres and wheels
12 9
drive system
11 8.3
fuel and exhaust
4 3
body and structure
3 2.3
Items Not Tested
2 1.5
structure and attachments
1 0.8

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 KDX250 beats 0 of its 4 closest rivals (YAMAHA YP250, YAMAHA WR250F, HONDA XR250).

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 KDX250.

Pass rate by registration year

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

Best year to buy used: 1992 (78.4% pass). Weakest: 1991 (73.6%).

73%76%79%1991: 73.6% pass (72 tests)1992: 78.4% pass (88 tests)19911992

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.