Subaru Unknown (1999)
1999 Subaru Unknown
CarHunch analysed 148 real MOT records for the 1999 Subaru Unknown. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
These 1999 Subarus are in dire condition: just 10.9% pass their MOT on the first attempt, compared to the UK average of 80%, and petrol models fare even worse at 8.4%. Only 0.7% have ever recorded a dangerous defect, which is genuinely low, but that silver lining barely matters when nine out of ten fail.
At nearly 101,000 miles median, these cars are well-used 25-year-olds, yet they're averaging just 0.08 failures per vehicle—suggesting most problems are minor niggles rather than serious mechanical breakdowns. Before buying one, budget for immediate work on suspension, brakes, and lights, then get a pre-purchase inspection from a Subaru specialist who can spot age-related rot that MOT testers might miss.
What to check before buying a 1999 Subaru 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 Subaru Unknown
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 (95%) | 140 | 8.4% | 0.05 |
| Other (5%) | 7 | 61.9% | 0.71 |
| LPG (1%) | 1 | 0% | 0 |
Mileage Distribution
Most 1999 Subaru 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 1999 Subaru Unknown vehicles fall between 38,522 and 128,696 miles.
MOT History Averages
Most Common MOT Issues — 1999 Subaru 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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27.3%
Rear Sub-frame corroded but not seriously weakened
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22.7%
Offside Front Tyre worn close to legal limit/worn on edge
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22.7%
Nearside Front Tyre worn close to legal limit/worn on edge
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18.2%
Offside Front Seat belt webbing slightly damaged or frayed
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18.2%
Nearside Rear Shock absorber has a light misting of oil
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18.2%
Exhaust has a minor leak of exhaust gases
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13.6%
Oil leak, but not excessive
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13.6%
Offside Rear Shock absorber has a light misting of oil
Data covers a 3-year window centred on 1999. Counts include advisories and failures.
Found a specific Subaru Unknown?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.