Pass rate
66.8%
Below average — 5.8 pts behind the 72.6% that cars this age and mileage manage.
Across 253 recorded tests.
Typical repair bill £61–£168
2003 Mazda Demio MOT pass rate
- 2003
- typical 69,497 mi
Check your postcode
Most common fault
Suspension
29.8% of faults · 21.0% nationally
mostly worn arm bushes, split ball-joint boots and broken coil springs.
Which year to buy
- Best 2009 79.2% pass
- Avoid 2003 66.8% pass · this year
Across the 7 years on record, a spread of 12.4 points. See every year →
- First-attempt pass
- 55.8%
- Typical mileage
- 69k mi
The 2003 Mazda Demio MOT pass rate is 66.8% of its MOT tests — 5.8 points behind what its age and mileage predict. Suspension is the biggest single reason it fails, at 29.8% of what testers record.
Expert verdict
Suspension: 1.4× the national share
Suspension accounts for 29.8% of everything recorded on the 2003 Mazda Demio, against 21.0% nationally — 8.8 points above. Ask for the front and rear suspension to be checked on a ramp before you buy — worn bushes and broken springs are cheap to look at and expensive to discover at test time.
- Falls short of its own age and mileage. Like-for-like, cars this age and mileage expect about 72.6%; this one manages 66.8% — 5.8 points below. Age is a fair excuse; this is not age.
- When it fails, it costs. Only 27% 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.
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 Mazda Demio? Get an email when these numbers change .
How does the 2003 Mazda Demio compare?
Cars of this age and mileage average 72.6%, so this figure is 5.8 points behind what its age and mileage predict. On a first attempt, before any retests, the figure drops to 55.8%. The median 2003 Mazda Demio in this dataset had covered 69,497 mi.
Pass rates also shift with the test month: tests recorded October–March passed 68.9% of the time, April–September 62.8%.
The single most recorded failure item is "Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength", noted on 12.25% of tests.
- 253 recorded tests behind this page.
- 66.8% overall pass rate, 55.8% on a first attempt.
- Across every year of the Mazda Demio, the average is 71.4% — best year 2009 (79.2%), worst 2003 (66.8%).
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
- 253
- Typical mileage (median)
- 69,497 mi
- Make and model
- Mazda Demio
- Updated
- 2026-11-07
Source: DVSA anonymised MOT test data (2023–2025), OGL v3.0.
Top part to budget for
Corrosion Welding Repair
Typically a garage job — get quotes before committing.
Does mileage affect the Demio MOT pass rate?
Pass rate by odometer reading. Bar lengths start at 52% so small gaps stay visible.
Regional pass rates for the Demio
| Region | Tests | Pass rate |
|---|---|---|
| South East | 122 | 63.9% |
| South West | 74 | 63.5% |
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 Demio
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 Demio
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 corrosion 12.3% 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.
-
Check the suspension joints 8.7% of tests
“ball joint dust cover severely deteriorated”
With the car parked on level ground, rock the top of each front wheel in and out while someone watches the suspension arm. Clunks, or rubber boots split and greasy, are what testers record here.
-
Check the lights 6.7% 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.
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 Demio through its MOT
Across the 10 items that are recorded most often on this model, the average repair comes to £61–£168 — and 27% of those repairs are parts that cost under £30.
- Average repair across the 10 common items
- £61–£168
- Cheapest common item: srs malfunction indicator lamp warning lamp…
- £3–£12
- Dearest common item: component mounting prescribed areas…
- £180–£450
- Common items a careful owner can do at home
- 70%
- Repairs that still cost under £30
- 27%
Estimates from typical UK parts prices, weighted by how often each item appears in 253 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 Demio, side by side
7 model years on record, from 2000 to 2010. Across them the pass rate runs from 66.8% to 79.2% — a spread of 12.4 points. The bar under each year is the item that failed it most often.
- 2000 72.0% joints constant velocity boot…
- 2001 70.9% joints constant velocity boot…
- 2002 70.7% joints constant velocity boot…
- 2003 66.8%component mounting prescribed…
- 2008 77.1% headlamp lens slightly defective
- 2009 79.2% headlamp has a product on the…
- 2010 77.3% headlamp lens slightly defective
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 Mazda Demio 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
- Volkswagen Beetle 67.1%
- Volvo V40 67.3%
- Vauxhall Combo 65.8%
- Ford Ka 68.0%
- Ford Galaxy 68.0%
- Citroen C3 68.2%
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 Mazda Demio 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 739 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 |
|---|---|---|---|---|
| Suspension | 225 | 29.80% | 20.98% | +8.82 |
| Brakes | 119 | 15.70% | 20.89% | −5.19 |
| Body, chassis, structure | 84 | 11.10% | 5.57% | +5.53 |
| Lamps, reflectors and electrical equipment | 76 | 10.10% | 12.21% | −2.11 |
| Tyres | 75 | 9.90% | 19.76% | −9.86 |
| Noise, emissions and leaks | 54 | 7.10% | 5.52% | +1.58 |
| Steering | 28 | 3.70% | 2.57% | +1.13 |
| Identification of the vehicle | 28 | 3.70% | 1.76% | +1.94 |
| Non-component advisories | 27 | 3.60% | 4.18% | −0.58 |
| Visibility | 23 | 3.00% | 4.97% | −1.97 |
The exact failure items, in the tester's words
| Recorded item | Severity | Tests | Est. cost |
|---|---|---|---|
| Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength Suspension | Major | 12.3% | £180–450 |
| Joints constant velocity boot severely deteriorated Body, chassis, structure | Minor | 11.5% | £80–250 |
| Ball joint dust cover severely deteriorated Suspension | Minor | 8.7% | £18–45 |
| Joints constant velocity boot split or insecure, no longer prevents the ingress of dirt Body, chassis, structure | Major | 7.5% | £80–250 |
| Registration plate lamp(s) inoperative in the case of multiple lamps or light sources Lamps, reflectors and electrical equipment | Minor | 6.7% | £5–20 |
| Headlamp lens slightly defective Lamps, reflectors and electrical equipment | Minor | 5.5% | £5–25 |
| Track rod end ball joint dust cover damaged or deteriorated, but preventing the ingress of dirt Steering | Minor | 5.5% | £18–45 |
| Ball joint excessively worn Suspension | Major | 4.3% | £18–45 |
| Position lamp not working Lamps, reflectors and electrical equipment | Major | 3.2% | £5–25 |
| Srs malfunction indicator lamp warning lamp indicates a fault Seat belts and supplementary restraint systems | Major | 3.2% | £3–12 |
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 |
|---|---|---|---|
| Tread depth below requirements of 1.6mm Tyres | Advisory | 15.4% | £45–95 |
| Component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength Suspension | Advisory | 15.0% | £180–450 |
| Pins and bushes pin or bush excessively worn Suspension | Advisory | 14.6% | £40–150 |
| Engine oil leaks leaking excessively from engine Noise, emissions and leaks | Advisory | 12.7% | £200–700 |
| Flexible brake hoses ferrule excessively corroded Brakes | Advisory | 11.1% | £25–70 |
| Rigid brake pipes excessively corroded Brakes | Advisory | 10.7% | £80–180 |
Pass rate by mileage
| Mileage | Tests | Pass rate | Median odometer |
|---|---|---|---|
| 0-30k | 7 | 85.7% | 22,750 mi |
| 30-60k | 90 | 73.3% | 46,337 mi |
| 60-90k | 89 | 62.9% | 74,676 mi |
| 90-120k | 44 | 61.4% | 104,880 mi |
| 120k+ | 23 | 60.9% | 140,200 mi |
Source: 253 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 Demio MOT questions
What is the MOT pass rate for a 2003 Mazda Demio?
66.8% of the 253 2003 Mazda Demio tests in this dataset passed, against a national average of 72.6% for cars first used in 2003. First-attempt pass rate: 55.8%.
What are the most common MOT failures on a 2003 Mazda Demio?
The three most recorded items are component mounting prescribed areas prescribed area excessively corroded significantly reducing structural strength (12.25%), joints constant velocity boot severely deteriorated (11.46%), ball joint dust cover severely deteriorated (8.70%). Percentages are the share of tests on this vehicle that recorded the item.
Does mileage affect the 2003 Mazda Demio MOT pass rate?
Yes. Cars under 30,000 miles passed 85.7% of the time, falling to 60.9% for those over 120,000 miles. The median 2003 Mazda Demio in this dataset had covered 69,497 mi.
Does the season affect the 2003 Mazda Demio MOT pass rate?
Tests recorded in the winter months (October–March) passed 68.9% of the time; summer months (April–September) passed 62.8%. Brakes, tyres and lights are tested harder in bad weather, but the difference is small on most models.