Yamaha Rd125 (1984)
1984 Yamaha Rd125
CarHunch analysed 128 real MOT records for the 1984 Yamaha Rd125. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1984 Yamaha RD125 passes its MOT on the first attempt 85.8% of the time, which is a solid 5.8 percentage points above the UK average—a genuine reliability edge for a 40-year-old bike. Only 9.4% have ever shown a dangerous defect, so safety isn't a widespread concern with this model.
These machines typically show around 21,660 miles on the clock, which is reasonable for their age, and they average just 0.72 failures per test with 2.0 advisories, suggesting wear is gradual and predictable rather than sudden. If you're considering one, get a pre-purchase inspection focused on the fuel system and electrics—the advisory pattern points to those areas as the first things to fatigue—and budget for preventative work rather than expecting a trouble-free ride.
What to check before buying a 1984 Yamaha Rd125
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 Rd125
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Mileage Distribution
Most 1984 Yamaha Rd125 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 1984 Yamaha Rd125 vehicles fall between 14,587 and 28,599 miles.
1984 Yamaha Rd125 — Still on the Road
27 vehicles still getting MOTs in 2024 — 77% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2024.
MOT History Averages
Most Common MOT Issues — 1984 Yamaha Rd125
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
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17.4%
Rear wheel bearings have slight free play
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12.8%
Headlamp aim too high
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11.3%
Rear reflector on motorcycle missing
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9.9%
Exhaust noisy
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9.2%
Drive chain slightly loose
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8.5%
Chain guard missing
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8.2%
Rear Roller brake test indicates slight fluctuation of brake effort
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7.8%
Nearside Front shock absorber has light misting of stanchion
Data covers a 3-year window centred on 1984. Counts include advisories and failures.
Found a specific Yamaha Rd125?
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