2003 Fiat Doblo — MOT failures & pass rate
Across 4,159 MOT tests, the 2003 Fiat Doblo recorded a 66.3% pass rate. Vans of a similar age fail 30.0% of the time, so this is 3.7pp worse than the group it competes with. Failures cluster in lighting & signalling, suspension and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (20.8%) and suspension (17.9%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, component mounting prescribed areas and headlamp — headlamp aim alone was recorded 577 times.
A 150k+ example is materially riskier than a 0-30k one: 35.6% versus 20.8%.
Advisories point at the next bill rather than this one: suspension was flagged on 35.0% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 20.8% | 864 |
| 2 | Suspension | 17.9% | 743 |
| 3 | Brakes | 14.9% | 619 |
| 4 | Body, structure & corrosion | 11.5% | 479 |
| 5 | Visibility | 8.6% | 357 |
| 6 | Emissions & environmental | 7.0% | 292 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 577 |
| 2 | Component mounting prescribed areas | 548 |
| 3 | Headlamp | 439 |
| 4 | Service brake performance | 395 |
| 5 | Exhaust system | 243 |
| 6 | Position lamp | 210 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 35.0% | 1,456 |
| 2 | Brakes | 32.2% | 1,338 |
| 3 | Tyres | 30.7% | 1,278 |
| 4 | Lighting & signalling | 27.2% | 1,133 |
| 5 | Body, structure & corrosion | 19.7% | 818 |
| 6 | Emissions & environmental | 17.8% | 739 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 53 | 20.8% |
| 30-60k | 290 | 25.5% |
| 60-90k | 813 | 31.6% |
| 90-120k | 1,034 | 33.9% |
| 120-150k | 904 | 35.9% |
| 150k+ | 1,041 | 35.6% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 4,012 | 33.9% |
| Petrol | 147 | 28.6% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,294 | 33.6% |
| 2022 | 1,026 | 33.5% |
| 2023 | 796 | 33.5% |
| 2024 | 608 | 33.9% |
| 2025 | 435 | 34.3% |
What to check before buying a 2003 Doblo
On a 2003 Doblo, lighting & signalling is what the MOT record says goes wrong most — it appeared in 20.8% of tests. Check these areas before you commit.
- Lighting & signalling (20.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (17.9% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Brakes (14.9% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2003 Fiat Doblos pass their MOT?
66.3% of the 4,159 2003 Fiat Doblo MOT tests in this dataset passed — a 33.7% fail rate.
What is the most common MOT failure on a 2003 Fiat Doblo?
Lighting & signalling, recorded in 20.8% of tests, followed by suspension (17.9%).
Does the 2003 Doblo get worse with mileage?
Its MOT fail rate rises from 20.8% in the 0-30k band to 35.6% in the 150k+ band.
Methodology & source. Based on 4,159 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.