SYM ADX 125
Real ownership data from 243 UK ADX 125 motorcycles — mileage, MOT pass rates and the faults that actually come up, taken from DVSA test records rather than opinion.
Most common ADX 125 problems
Ranked by how often each fault appears in this model's MOT history.
| Fault | Severity | Share of faults |
|---|---|---|
| Tyres | advisory | 100% |
ADX 125 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 | |
|---|---|---|---|---|
| 2026 | 73 | — | — | — |
| 2025 | 66 | — | — | — |
| 2024 | 74 | — | — | — |
| 2023 | 30 | 3,193 mi | — | 100% |
ADX 125 questions, answered with data
What are the most common problems with the SYM ADX 125?
Across 243 UK examples, the most frequently recorded MOT faults are tyres (100% of all recorded faults).
What is average mileage for a SYM ADX 125?
The median SYM ADX 125 in the UK has covered 3,193 miles. Half of all examples fall between 2,298 and 6,486 miles.
Is the SYM ADX 125 reliable?
100% of SYM ADX 125 MOT tests are passed first time, with an average of 0.25 faults recorded per test. This is measured from DVSA MOT records, not owner opinion.
Based on DVSA MOT test records for 243 SYM ADX 125 motorcycles registered in Great Britain and Northern Ireland. Contains public sector information licensed under the Open Government Licence v3.0.