Proton Jumbuck (2003)
2003 Proton Jumbuck
CarHunch analysed 296 real MOT records for the 2003 Proton Jumbuck. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 2003 Proton Jumbuck has a first-time MOT pass rate of 69.8%, which sits 10 points below the UK average of 80%, and that gap reflects a genuinely ageing vehicle with structural vulnerabilities. More concerning is that 32.1% of these cars have recorded dangerous defects at some point, a figure that should give any potential buyer serious pause.
These Jumbucks are running around 53,000 miles on average for their age, suggesting moderate use, but the 5.35 average failures per test tells you mechanical decay is real and accelerating. Before committing to one, budget for remedial work on suspension, brakes, and corrosion—and seriously consider walking away if the seller can't show you a recent, clean MOT.
What to check before buying a 2003 Proton Jumbuck
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 Proton Jumbuck
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%) | 293 | 69.8% | 5.35 |
| LPG (1%) | 2 | 69.4% | 5 |
| Diesel (0%) | 1 | 70% | 6 |
Mileage Distribution
Most 2003 Proton Jumbuck 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 Proton Jumbuck vehicles fall between 36,442 and 66,065 miles.
2003 Proton Jumbuck — Still on the Road
Numbers are declining — 52 vehicles still getting MOTs in 2025 (24% 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 — 2003 Proton Jumbuck
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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60.6%
Offside Front Tyre worn close to the legal limit
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57.8%
Oil leak
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56.6%
Nearside Steering rack gaiter split
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55.4%
Offside Steering rack gaiter split
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55.4%
Nearside Front Tyre worn close to the legal limit
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50.8%
Oil leak, but not excessive
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33.9%
Front Brake pad(s) wearing thin
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33.6%
Exhaust has a minor leak of exhaust gases
Data covers a 3-year window centred on 2003. Counts include advisories and failures.
Found a specific Proton Jumbuck?
Enter the reg to see its individual MOT history, AI Hunches, and how it compares to this cohort.