Ford Sierra (1990)
1990 Ford Sierra
CarHunch analysed 8,383 real MOT records for the 1990 Ford Sierra. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1990 Sierra's 64% first-time MOT pass rate is significantly below the UK average of 80%, indicating these cars face meaningful reliability challenges at test time. With nearly one in ten examples having recorded a dangerous defect, buyers should be cautious and insist on a professional pre-purchase inspection.
At an average mileage of around 50,500 miles for a car this age, these Sierras are relatively low-mileage survivors, yet they're still averaging 1.43 failures per test, suggesting wear and corrosion issues are common despite gentle use. Before committing to one, have a trusted mechanic specifically check the exhaust system, suspension, and brakes—the advisory count of 4.0 per vehicle points to accumulated wear in exactly these areas.
What to check before buying a 1990 Ford Sierra
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 Ford Sierra
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 (94%) | 7,916 | 64.2% | 1.44 |
| Diesel (6%) | 464 | 61.7% | 1.25 |
| Other (0%) | 2 | 87.5% | 0.5 |
| LPG (0%) | 1 | 69.6% | 7 |
Mileage Distribution
Most 1990 Ford Sierra 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 1990 Ford Sierra vehicles fall between 25,740 and 72,982 miles.
1990 Ford Sierra — Still on the Road
311 vehicles still getting MOTs in 2025 — 50% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
MOT History Averages
Most Common MOT Issues — 1990 Ford Sierra
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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20.9%
Nearside Rear Suspension component mounting prescribed area is excessively corroded
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19.7%
Offside Rear Suspension component mounting prescribed area is excessively corroded
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17.7%
Oil leak
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13.8%
Nearside Rear Tyre worn close to the legal limit
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13.6%
Offside Front Brake hose slightly deteriorated
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13.6%
Offside Rear Tyre worn close to the legal limit
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13.5%
Nearside Front Brake hose slightly deteriorated
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13.3%
Parking brake: efficiency below requirements
Data covers a 3-year window centred on 1990. Counts include advisories and failures.
Found a specific Ford Sierra?
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