Dennis Unknown (2003)
2003 Dennis Unknown
CarHunch analysed 1,724 real MOT records for the 2003 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 2003 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%) | 1,721 | 3.1% | 0.02 |
| Petrol (0%) | 2 | 0% | 0 |
| Diesel (0%) | 1 | 100% | 0 |
Mileage Distribution
Most 2003 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 2003 Dennis Unknown vehicles fall between 59,890 and 308,503 miles.
2003 Dennis Unknown — Still on the Road
16 vehicles still getting MOTs in 2025 — 55% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2017–2025.
MOT History Averages
Most Common MOT Issues — 2003 Dennis 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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13.9%
Oil leak, but not excessive
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8.2%
Vehicle structure is corroded but structural rigidity is not significantly reduced
-
6.6%
Nearside Front Vehicle structure is corroded but structural rigidity is not significantly reduced
-
5.7%
Offside Rear Vehicle structure is corroded but structural rigidity is not significantly reduced
-
4.9%
Nearside Rear Outer Tyre slightly damaged/cracking or perishing
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4.9%
Offside Front Vehicle structure is corroded but structural rigidity is not significantly reduced
-
4.1%
Parking brake efficiency below requirements
-
4.1%
Oil leak, but not excessive engine area
Data covers a 3-year window centred on 2003. 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.