Dennis Unknown (1986)
1986 Dennis Unknown
CarHunch analysed 487 real MOT records for the 1986 Dennis Unknown. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
What to check before buying a 1986 Dennis 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 Dennis 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 |
|---|---|---|---|
| Diesel (100%) | 485 | 0.2% | 0 |
| Petrol (0%) | 2 | 0% | 0 |
Mileage Distribution
Most 1986 Dennis 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 1986 Dennis Unknown vehicles fall between 291,954 and 291,954 miles.
MOT History Averages
Most Common MOT Issues — 1986 Dennis Unknown
Based on actual MOT test records for this model. Percentage shows how often each item appears across all vehicles in this cohort.
-
100%
moisture around rear dif
-
100%
Offside Axle king pin has slight play in pin and/or bush
-
100%
Central Rear Oil leak, but not excessive slight oil leak on diff
-
100%
Nearside Axle king pin has slight play in pin and/or bush
-
100%
nearside & offside front king pins have slight movement
-
100%
Service brake efficiency below requirements
-
100%
slight play in offside front king pin
-
100%
Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt several track rod end boots in listed condition and repaired with compound rubber sealant
Data covers a 3-year window centred on 1986. Counts include advisories and failures.
Found a specific Dennis Unknown?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.