Pass rate
70.3%
Below average — 2.3 pts behind the 72.6% that cars this age and mileage manage.
Across 246 recorded tests.
Typical repair bill £61–£168
2003 Proton Jumbuck MOT pass rate
- 2003
- typical 70,294 mi
Check your postcode
Most common fault
Brakes
21.8% of faults · 20.9% nationally
mostly worn pads and discs, corroded pipes and a handbrake that will not hold.
Which year to buy
- Best 2005 74.6% pass
- Avoid 2004 68.7% pass
Across the 4 years on record, a spread of 5.9 points. See every year →
- First-attempt pass
- 63.7%
- Typical mileage
- 70k mi
The 2003 Proton Jumbuck MOT pass rate is 70.3% of its MOT tests — 2.3 points behind what its age and mileage predict. Brakes is the biggest single reason it fails, at 21.8% of what testers record.
Expert verdict
Emissions & leaks: 2.3× the national share
Emissions & leaks make up 12.9% of everything recorded on the 2003 Proton Jumbuck, against 5.5% nationally — 7.4 points above. Brakes are still the single largest share at 21.8%, but at 20.9% nationally that one is ordinary. A smoky diesel or a leaking joint fails on emissions more often than on wear, so ask for a recent emissions printout.
- When it fails, it costs. Only 24% of this model’s typical repairs come in under £30 in parts — the failures here tend to be the kind that need a garage rather than a bulb.
- Based on a small sample. 246 tests back this page. That is enough to publish and to index, not enough to treat the decimal places as precise — read the pattern, not the second digit.
Written from this page's own figures: fault shares against the national composition, the like-for-like pass rate, and the priced repair list. How these are worked out
Watching a Proton Jumbuck? Get an email when these numbers change .
How does the 2003 Proton Jumbuck compare?
Cars of this age and mileage average 72.6%, so this figure is 2.3 points behind what its age and mileage predict. On a first attempt, before any retests, the figure drops to 63.7%. The median 2003 Proton Jumbuck in this dataset had covered 70,294 mi.
Pass rates also shift with the test month: tests recorded October–March passed 68.8% of the time, April–September 72.0%.
The single most recorded failure item is "Catalyst emissions Lambda reading after 2nd fast idle outside specified limits", noted on 6.50% of tests.
- 246 recorded tests behind this page.
- 70.3% overall pass rate, 63.7% on a first attempt.
- Across every year of the Proton Jumbuck, the average is 70.8% — best year 2005 (74.6%), worst 2004 (68.7%).
Figures count every completed test on this vehicle-year in the dataset, including retests. See methodology for the exact definition.
This page's data
- Tests analysed
- 246
- Typical mileage (median)
- 70,294 mi
- Make and model
- Proton Jumbuck
- Updated
- 2026-11-07
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Emissions Repair
Typically a garage job — get quotes before committing.
Does mileage affect the Jumbuck MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 57% so small gaps stay visible.
Regional pass rates for the Jumbuck
| Region | Tests | Pass rate |
|---|---|---|
| South East | 63 | 73.0% |
| South West | 44 | 61.4% |
| East of England | 43 | 72.1% |
| West Midlands | 28 | 67.9% |
| Yorkshire | 27 | 70.4% |
Regions come from the postcode area recorded at the test station. Areas on region borders are assigned to the region with the majority of their population.
What fails a 2003 Jumbuck
Everything a tester recorded on this vehicle, grouped into the inspection sections that produced it. The notch on each bar is the national share, so you can see at a glance whether this car is unusual or just ordinary.
A test can record several items, so these percentages do not add up to 100%. The exact strings, with prices, are in the full DVSA record at the bottom of this page.
Before your test
Three checks worth doing on a 2003 Jumbuck
These are not generic tips — they are the faults recorded most often on this exact model, rewritten as things you can check yourself. All three take about ten minutes and cost nothing.
-
Check the exhaust and emissions 6.5% of tests
“catalyst emissions Lambda reading after 2nd fast idle outside specified limits”
Listen for a blow at idle and have someone rev it gently. Then look at the tailpipe smoke: blue is oil, white when warm is coolant, black is over-fuelling. Any of those and the emissions test is the least of it.
-
Check the lights 6.5% of tests
“registration plate lamp(s) inoperative in the case of multiple lamps or light sources”
Switch everything on and walk round the car: both headlamps on dip and main, every indicator, both brake lights, reverse, fog and the two number-plate lamps. A bulb is a few pounds and a five-minute job.
-
Check corrosion 5.3% of tests
“component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength”
Look under the sills, around the jacking points and where the suspension mounts meet the body. Flaking, holed or crumbly metal fails; a brown stain on sound metal does not.
Shares are the proportion of tests on this vehicle that recorded the item, so they overlap: one test can record several.
What it costs to get a 2003 Jumbuck through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £61–£168 — and 24% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £61–£168
- Cheapest common item: rear fog lamp not working
- £3–£15
- Dearest common item: component mounting prescribed areas…
- £180–£450
- Common items a careful owner can do at home
- 40%
- Repairs that still cost under £30
- 24%
Estimates from typical UK parts prices, weighted by how often each item appears in 246 MOT tests on this vehicle. They exclude diagnostics, retest fees and garage labour where the part is a DIY fit, and they are not figures from the DVSA dataset. Older and higher-mileage examples cost more than the average. How these estimates are built → · All MOT repair costs → · Cheapest cars to put through a test →
Every year of the Jumbuck, side by side
4 model years on record, from 2003 to 2006. Across them the pass rate runs from 68.7% to 74.6% — a spread of 5.9 points. The bar under each year is the item that failed it most often.
- 2003 70.3%catalyst emissions lambda reading…
- 2004 68.7% component mounting prescribed…
- 2005 74.6% component mounting prescribed…
- 2006 70.9% registration plate lamp(s)…
Colour is the pass rate on a fixed scale, so a block means the same thing on any model. Each year links to its own page with the full fault breakdown.
Compare the 2003 Proton Jumbuck with another year
The raw pass rate mostly measures age. The year comparison adds the like-for-like figure, the mileage bands and the repair bill.
Other 2003 cars with a similar record
- Vauxhall Vectra 70.4%
- Skoda Fabia 70.1%
- Vauxhall Zafira 70.1%
- Suzuki Carry 70.5%
- Ford Focus 70.6%
- Land Rover Freelander 70.0%
Closest pass rates among 2003 cars with at least 2,000 tests, so a small sample cannot flatter itself into the list. See the full rankings: best and worst MOT pass rates.
The full DVSA record for the 2003 Proton Jumbuck 10 failure items · 6 advisories · 10 inspection categories · mileage brackets · all of it in the page, none of it above the fold
Every inspection category
Shares of the 732 individual items recorded on this vehicle, and the same share across all cars nationally. A single test can record several items, so a row is not a percentage of tests.
| Category | Items | This car | Nationally | Difference |
|---|---|---|---|---|
| Brakes | 162 | 21.80% | 20.89% | +0.91 |
| Suspension | 132 | 17.80% | 20.98% | −3.18 |
| Lamps, reflectors and electrical equipment | 116 | 15.60% | 12.21% | +3.39 |
| Noise, emissions and leaks | 96 | 12.90% | 5.52% | +7.38 |
| Body, chassis, structure | 74 | 10.00% | 5.57% | +4.43 |
| Tyres | 67 | 9.00% | 19.76% | −10.76 |
| Steering | 28 | 3.80% | 2.57% | +1.23 |
| Visibility | 25 | 3.40% | 4.97% | −1.57 |
| Seat belts and supplementary restraint systems | 21 | 2.80% | 0.82% | +1.98 |
| Non-component advisories | 11 | 1.50% | 4.18% | −2.68 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Catalyst emissions Lambda reading after 2nd fast idle outside specified limits Noise, emissions and leaks | Major | 6.5% | £60–250 |
| Registration plate lamp(s) inoperative in the case of multiple lamps or light sources Lamps, reflectors and electrical equipment | Minor | 6.5% | £5–20 |
| Rear fog lamp not working Lamps, reflectors and electrical equipment | Major | 5.7% | £3–15 |
| Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength Suspension | Major | 5.3% | £180–450 |
| Service brake imbalance across an axle Brakes | Major | 5.3% | £45–110 |
| Prescribed areas prescribed area strength or continuity significantly reduced Seat belts and supplementary restraint systems | Major | 4.9% | £40–120 |
| Battery(ies) insecure but not likely to fall from carrier Lamps, reflectors and electrical equipment | Minor | 4.1% | £60–140 |
| Exhaust system has a major leak of exhaust gases Body, chassis, structure | Major | 4.1% | £45–120 |
| Steering rack gaiter missing or no longer prevents the ingress of dirt Steering | Major | 4.1% | £120–300 |
| Windscreen damaged but not adversely affecting driver's view Visibility | Minor | 3.7% | £80–200 |
Severity is as recorded: Major and Dangerous fail the test outright; Minor and Advisory do not. Costs are estimates from typical UK parts prices — see how they are built.
What testers noted without failing the car
Advisories are the early warnings — the same parts a year or two before they fail. Reading them is how you tell a car that has been maintained from one that has been patched.
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Engine oil leaks leaking excessively from engine Noise, emissions and leaks | Advisory | 22.8% | £200–700 |
| Rigid brake pipes excessively corroded Brakes | Advisory | 20.7% | £80–180 |
| Exhaust system has a major leak of exhaust gases Body, chassis, structure | Advisory | 13.0% | £45–120 |
| Tread depth below requirements of 1.6mm Tyres | Advisory | 11.0% | £45–95 |
| Has a tear, caused by separation or partial failure of its structure Tyres | Advisory | 10.2% | £45–95 |
| Brake discs in such a condition that it is seriously weakened Brakes | Advisory | 7.3% | £45–110 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 11 | 81.8% | 26,826 mi |
| 30-60k | 67 | 73.1% | 48,315 mi |
| 60-90k | 103 | 69.9% | 73,795 mi |
| 90-120k | 32 | 65.6% | 104,997 mi |
| 120k+ | 33 | 66.7% | 140,946 mi |
Source: 246 recorded tests on this vehicle-year. Every row above is recomputed from the same DVSA extract as the rest of the page — see the methodology.
2003 Jumbuck MOT questions
What is the MOT pass rate for a 2003 Proton Jumbuck?
70.3% of the 246 2003 Proton Jumbuck tests in this dataset passed, against a national average of 72.6% for cars first used in 2003. First-attempt pass rate: 63.7%.
What are the most common MOT failures on a 2003 Proton Jumbuck?
The three most recorded items are catalyst emissions lambda reading after 2nd fast idle outside specified limits (6.50%), registration plate lamp(s) inoperative in the case of multiple lamps or light sources (6.50%), rear fog lamp not working (5.69%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2003 Proton Jumbuck MOT pass rate?
Yes. Cars under 30,000 miles passed 81.8% of the time, falling to 66.7% for those over 120,000 miles. The median 2003 Proton Jumbuck in this dataset had covered 70,294 mi.
Does the season affect the 2003 Proton Jumbuck MOT pass rate?
Tests recorded in the winter months (October–March) passed 68.8% of the time; summer months (April–September) passed 72.0%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.