Bentley Turbo (1991)
1991 Bentley Turbo
CarHunch analysed 168 real MOT records for the 1991 Bentley Turbo. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1991 Bentley Turbo falls slightly below the UK average first-time MOT pass rate at 77.6% versus 80%, and buyers should be aware that nearly one in three examples (32.1%) have recorded a dangerous defect at some point—a notably high figure that warrants professional inspection before purchase. These are ageing luxury cars with relatively modest mileage (median 80,681 miles for their age), yet they average nearly three failures and almost 12 advisories per test, suggesting components are deteriorating despite low use.
The high advisory count points to the typical wear pattern of older Bentleys: trim, seals, and ancillary systems fail before major mechanicals do, making regular specialist servicing essential. If you're seriously considering one, budget for a full pre-purchase inspection by a Rolls-Royce/Bentley specialist—the 32% dangerous-defect rate means cosmetic appeal alone won't guarantee roadworthiness.
What to check before buying a 1991 Bentley Turbo
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.
- ⚠️ 32.1% of these vehicles have had a dangerous defect recorded. Enter the reg below — the full MOT history will show exactly what was flagged and whether it was resolved.
- 📄 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 Bentley Turbo
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (99%) | 167 | 77.7% | 2.98 |
| Diesel (1%) | 1 | 66.7% | 3 |
Mileage Distribution
Most 1991 Bentley Turbo 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 1991 Bentley Turbo vehicles fall between 56,139 and 103,226 miles.
1991 Bentley Turbo — Still on the Road
Numbers are declining — 41 vehicles still getting MOTs in 2025 (46% of peak).
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 — 1991 Bentley Turbo
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
113.7%
Parking brake: efficiency below requirements
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58.2%
Oil leak
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37.4%
Oil leak, but not excessive
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34.3%
Nearside Rear wheel bearing has slight play
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31.5%
Offside Rear wheel bearing has slight play
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31.3%
Nearside Front Tyre worn close to the legal limit
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30.6%
Offside Rear Tyre worn close to the legal limit
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27%
Offside Front Tyre worn close to the legal limit
Data covers a 3-year window centred on 1991. Counts include advisories and failures.
Found a specific Bentley Turbo?
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