Suzuki Unknown (1981)
1981 Suzuki Unknown
CarHunch analysed 51,202 real MOT records for the 1981 Suzuki Unknown. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
These 1981 Suzukis are extremely unreliable by modern standards, with just 50% passing their MOT on the first attempt compared to the UK average of 80%—a significant gap that reflects the age and condition of surviving examples rather than any design flaw. The petrol variants perform even worse at 40% first-time pass, suggesting fuel system or ignition issues are common across the cohort.
The median mileage of just 13,306 miles indicates these are largely low-use classics or garage finds, yet they still fail MOTs at twice the national rate, pointing to age-related decay (seals, gaskets, electrics) rather than wear from driving. If you're considering one, budget for pre-purchase inspection by a specialist familiar with 1980s Japanese classics, as the zero recorded dangerous defects suggests failures are mainly minor components rather than safety-critical systems.
What to check before buying a 1981 Suzuki Unknown
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 Suzuki Unknown
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (100%) | 51,192 | 0.5% | 0 |
| Other (0%) | 6 | 95.8% | 0.17 |
| Diesel (0%) | 3 | 0% | 0 |
| Other (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 1981 Suzuki Unknown 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 1981 Suzuki Unknown vehicles fall between 4,734 and 26,719 miles.
1981 Suzuki Unknown — Still on the Road
Numbers are declining — 11 vehicles still getting MOTs in 2025 (14% of peak).
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2016–2025.
MOT History Averages
Most Common MOT Issues — 1981 Suzuki Unknown
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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9.7%
Exhaust noisy
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8.2%
Chain guard missing ()
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5.8%
Steering headbearing has slight free play
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4.2%
Rear Brake indicates slight fluctuation of brake effort
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3.7%
Headlamp not working on dipped beam
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3.2%
Headlamp aim too high
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3.2%
Offside Front Shock absorber has a light misting of oil
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2.9%
Nearside Front Shock absorber has a light misting of oil
Data covers a 3-year window centred on 1981. Counts include advisories and failures.
Found a specific Suzuki Unknown?
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