BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ KAWASAKI/KLX 250 S9F
Model report · 2005–2025

KAWASAKI KLX 250 S9F

249cc Petrol Class 2
86.5%
first-time pass rate
6.5%
failed outright
5,931
median miles at test
1,584
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2012–2025

The KLX 250 S9F's first-time pass rate has risen 2.9 points since 2012, 87.5% to 90.4%.

78%88%99%2012: 87.5% pass (104 tests)2013: 86.2% pass (138 tests)2014: 85.9% pass (156 tests)2015: 91.3% pass (150 tests)2016: 84.0% pass (144 tests)2017: 82.8% pass (134 tests)2018: 88.8% pass (89 tests)2019: 81.2% pass (101 tests)2020: 88.5% pass (96 tests)2021: 95.4% pass (108 tests)2022: 84.6% pass (104 tests)2023: 81.4% pass (97 tests)2024: 81.9% pass (83 tests)2025: 90.4% pass (73 tests)20122025

Pass rate by mileage

how the KLX 250 S9F's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage KLX 250 S9F passes first time 88.0% of the time; by 20k that's 87.7%.

80%85%89%0k: 88.0% pass (1,122 tests)10k: 81.2% pass (373 tests)20k: 87.7% pass (57 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 KLX 250 S9F

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
brakes
64 32.3 0.6×
lamps and reflectors
31 15.7 0.9×
lighting and signalling
20 10.1 0.2×
suspension
16 8.1 1.1×
drive system
14 7.1 0.6×
Identification of the vehicle
13 6.6 3.6×
tyres and wheels
12 6.1 0.3×
structure and attachments
11 5.6 0.8×
steering and suspension
9 4.5 0.2×
tyres
8 4 0.6×

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 KLX 250 S9F beats 0 of its 1 closest rivals (HONDA CRF250).

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 KLX 250 S9F.

Pass rate by registration year

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

Best year to buy used: 2011 (93.5% pass). Weakest: 2008 (83.9%).

82%89%95%2008: 83.9% pass (56 tests)2009: 84.9% pass (853 tests)2010: 86.6% pass (461 tests)2011: 93.5% pass (168 tests)200820102011

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.

KAWASAKI KLX 250 S9F FAQ

answers computed from the data above · terms in the glossary

Is the KAWASAKI KLX 250 S9F reliable?

The KAWASAKI KLX 250 S9F is about average for its class: 86.5% of its 1,584 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2050 of 5426 models.

What does a KLX 250 S9F fail its MOT on most?

brakes — 32% of all defects recorded against failed KLX 250 S9F tests.

What is the best year of KLX 250 S9F to buy used?

By first-time pass rate, 2011-registered examples do best (93.5%) and 2008 worst (83.9%). Condition and history still trump the year.

How many miles will a KLX 250 S9F last?

The median KLX 250 S9F shows 5,931 miles at test, and examples around 20k miles still pass 87.7% of the time — mileage alone rarely kills one.