Yamaha Xj 600 S Diversion (1999)
1999 Yamaha Xj 600 S Diversion
CarHunch analysed 141 real MOT records for the 1999 Yamaha Xj 600 S Diversion. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
This 1999 Yamaha XJ 600 is a serious reliability concern—only 34% pass the MOT first time, less than half the UK average of 80%, and nearly 6% have suffered dangerous defects at some point. For a 25-year-old bike with just 24,000 miles on average, this poor pass rate suggests these machines are either neglected or mechanically fragile, regardless of mileage.
The typical owner faces 0.4 failures and 1.1 advisories per test, indicating persistent minor issues rather than catastrophic breakdowns. If you're considering one, budget seriously for a pre-purchase inspection by a motorcycle specialist and expect regular maintenance costs to bring it through MOT safely.
What to check before buying a 1999 Yamaha Xj 600 S Diversion
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 Xj 600 S Diversion
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 (97%) | 137 | 31.8% | 0.4 |
| Other (3%) | 4 | 93.8% | 0.5 |
Mileage Distribution
Most 1999 Yamaha Xj 600 S Diversion 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 Xj 600 S Diversion vehicles fall between 15,041 and 30,974 miles.
1999 Yamaha Xj 600 S Diversion — Still on the Road
Strong survival — 10 vehicles still getting MOTs in 2022, 91% of the peak.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2016–2022.
MOT History Averages
Found a specific Yamaha Xj 600 S Diversion?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.