Yamaha Tw 125 (1999)
1999 Yamaha Tw 125
CarHunch analysed 117 real MOT records for the 1999 Yamaha Tw 125. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1999 YAMAHA TW 125 is a significant reliability concern, with only 16.1% passing MOT first time against the UK average of 80% — this is a genuinely poor result that signals systemic issues across the tested cohort. The good news is that dangerous defects are rare at 2.6%, so safety-critical failures aren't the main problem here.
These bikes are turning up with very modest mileage (median 16,334 miles), yet still failing MOT at high rates, which suggests neglect or age-related deterioration rather than wear from use. Average failures sit at just 0.2 per vehicle but advisories climb to 0.7, pointing to corrosion, worn consumables, and minor electrical gremlins typical of 25-year-old motorcycles — before you buy one, get an independent inspection to assess brake condition, fuel system integrity, and wiring harness rot.
What to check before buying a 1999 Yamaha Tw 125
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 Yamaha Tw 125
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 (98%) | 115 | 14.7% | 0.2 |
| Other (2%) | 2 | 100% | 0 |
Mileage Distribution
Most 1999 Yamaha Tw 125 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 1999 Yamaha Tw 125 vehicles fall between 7,602 and 22,142 miles.
MOT History Averages
Found a specific Yamaha Tw 125?
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