KTM SX125
Real ownership data from 54 UK SX125 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common SX125 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Lights and indicators | major | 19.2% |
| Suspension | dangerous | 14.7% |
| Chain and sprockets | fail | 7.6% |
| Tyres | fail | 6.8% |
| Brakes | fail | 6.8% |
| Other | major | 6.4% |
| Electrical | fail | 4.9% |
| Brake discs and pads | fail | 3.8% |
Advisories (wear noted but not failed) are excluded above; the most common is brake discs and pads.
SX125 mileage and reliability by year
Use this to judge whether a specific bike is high or low mileage for its age.
| YearYear | MedianMedian mileage | Mi/yrMiles/year | MOT passFirst-time pass | |
|---|---|---|---|---|
| 2006 | 9 | 18 mi | 77 | 79.63% |
| 2005 | 7 | 183 mi | 375 | 83.33% |
| 2003 | 5 | 2,599 mi | — | 70.59% |
| 2002 | 6 | 5,878 mi | 616 | 64.1% |
SX125 questions, answered with data
What are the most common problems with the KTM SX125?
Across 54 UK examples, the most frequently recorded MOT faults are lights and indicators (19.2% of all recorded faults), suspension (14.7% of all recorded faults), chain and sprockets (7.6% of all recorded faults).
What is average mileage for a KTM SX125?
The median KTM SX125 in the UK has covered 1,457 miles, and typically rides about 334 miles a year. Half of all examples fall between 162 and 3,504 miles.
Is the KTM SX125 reliable?
74.13% of KTM SX125 MOT tests are passed first time, with an average of 0.76 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 54 KTM SX125 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.