Sym Jet 14 125 E4 (2018)
2018 Sym Jet 14 125 E4
CarHunch analysed 226 real MOT records for the 2018 Sym Jet 14 125 E4. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2018 SYM JET 14 125 doesn't inspire confidence—its 55.7% first-time pass rate sits well below the UK average of 80%, and nearly one in five examples have recorded dangerous defects, which should give any buyer pause. This isn't a reliability standout; you're looking at a vehicle that regularly fails its MOT rather than passes it cleanly.
At just over 13,000 miles median mileage, these bikes are relatively young and lightly used, yet they're still averaging 0.49 failures and 1.5 advisories each, suggesting design or build quality issues rather than age-related wear. Before committing to one, insist on a full pre-purchase inspection by a qualified motorcycle mechanic and ask the seller specifically what defects have been rectified at previous MOTs—you need to know what you're inheriting.
What to check before buying a 2018 Sym Jet 14 125 E4
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Sym Jet 14 125 E4
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (99%) | 223 | 55.4% | 0.48 |
| Other (1%) | 3 | 75% | 0.67 |
Mileage Distribution
Most 2018 Sym Jet 14 125 E4 vehicles sit in the blue band. If the car you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2018 Sym Jet 14 125 E4 vehicles fall between 7,808 and 18,305 miles.
2018 Sym Jet 14 125 E4 — Still on the Road
Numbers are declining — 55 vehicles still getting MOTs in 2025 (44% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2021–2025.
MOT History Averages
Found a specific Sym Jet 14 125 E4?
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