2015 Fiat Doblo — MOT failures & pass rate
The 2015 Fiat Doblo passed 77.8% of its 31,436 recorded MOT tests. That is effectively the same as vans of a similar age (21.2% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in suspension, lighting & signalling and tyres.
What the MOT record shows
No single area dominates — suspension (12.3%) and lighting & signalling (9.6%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are coil spring, headlamp aim and tread depth — coil spring alone was recorded 2,355 times.
A 150k+ example is materially riskier than a 0-30k one: 24.7% versus 11.5%.
The petrol cars hold up better: 9.3% fail against 24.0% for diesel, a 14.7-point gap across 31,436 tests.
Tyres is the most common advisory, noted on 25.7% of tests — work that passed today but is likely due soon.
The trend is worsening — 20.2% of tests failed in 2021 against 24.1% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 12.3% | 3,879 |
| 2 | Lighting & signalling | 9.6% | 3,007 |
| 3 | Tyres | 6.8% | 2,139 |
| 4 | Brakes | 4.8% | 1,511 |
| 5 | Emissions & environmental | 4.1% | 1,288 |
| 6 | Visibility | 3.6% | 1,134 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Coil spring | 2,355 |
| 2 | Headlamp aim | 1,250 |
| 3 | Tread depth | 1,175 |
| 4 | Headlamp | 755 |
| 5 | Wipers | 630 |
| 6 | Stop lamp | 615 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 25.7% | 8,092 |
| 2 | Suspension | 16.4% | 5,153 |
| 3 | Brakes | 13.9% | 4,360 |
| 4 | Visibility | 8.1% | 2,532 |
| 5 | Emissions & environmental | 7.7% | 2,413 |
| 6 | Lighting & signalling | 6.4% | 2,000 |
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 | 2,740 | 11.5% |
| 30-60k | 6,987 | 18.3% |
| 60-90k | 10,085 | 23.3% |
| 90-120k | 7,504 | 25.9% |
| 120-150k | 2,804 | 26.8% |
| 150k+ | 1,265 | 24.7% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 27,518 | 24.0% |
| Petrol | 3,918 | 9.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 6,588 | 20.2% |
| 2022 | 6,422 | 21.1% |
| 2023 | 6,474 | 23.0% |
| 2024 | 6,093 | 22.7% |
| 2025 | 5,859 | 24.1% |
What to check before buying a 2015 Doblo
The failure pattern for this year is specific enough to inspect against: suspension accounted for 12.3% of tests. Start there.
- Suspension (12.3% 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.
- Lighting & signalling (9.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (6.8% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
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 2015 Fiat Doblos pass their MOT?
77.8% of the 31,436 2015 Fiat Doblo MOT tests in this dataset passed — a 22.2% fail rate.
What is the most common MOT failure on a 2015 Fiat Doblo?
Suspension, recorded in 12.3% of tests, followed by lighting & signalling (9.6%).
Does the 2015 Doblo get worse with mileage?
Its MOT fail rate rises from 11.5% in the 0-30k band to 24.7% in the 150k+ band.
Methodology & source. Based on 31,436 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.