Bentley Unknown (1989)
1989 Bentley Unknown
CarHunch analysed 105 real MOT records for the 1989 Bentley Unknown. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
What to check before buying a 1989 Bentley 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 Bentley 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 (99%) | 104 | 5.7% | 0.04 |
| Other (1%) | 1 | 50% | 1 |
Mileage Distribution
Most 1989 Bentley 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 1989 Bentley Unknown vehicles fall between 48,349 and 93,794 miles.
MOT History Averages
Most Common MOT Issues — 1989 Bentley Unknown
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
60%
Parking brake efficiency less than 50% of the required value
-
40%
Offside Rear Tyre slightly damaged/cracking or perishing very badly perished
-
40%
Nearside Rear Tyre slightly damaged/cracking or perishing very slightly perished
-
40%
Exhaust emissions carbon monoxide content excessive
-
40%
Offside Front Tyre slightly damaged/cracking or perishing perishing
-
20%
Brake lever has insufficient reserve travel
-
20%
Offside Rear Vehicle structure or chassis corroded within 30cm of a mounting, but not seriously affecting overall security Sill to floor
-
20%
Nearside Front Lower Suspension arm ball joint dust cover severely deteriorated
Data covers a 3-year window centred on 1989. Counts include advisories and failures.
Found a specific Bentley Unknown?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.