2021 Fiat Doblo 16V Tecnico Multijet Ii — MOT failures & pass rate
Across 927 MOT tests analysed for the 2021 Fiat Doblo 16V Tecnico Multijet Ii, the most common recorded failure areas were lighting & signalling, tyres and emissions & environmental. Its pass rate of 82.4% was below the average for cars of a similar age (91.2%).
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 6.2% | 57 |
| 2 | Tyres | 6.2% | 57 |
| 3 | Emissions & environmental | 5.3% | 49 |
| 4 | Brakes | 4.9% | 45 |
| 5 | Visibility | 4.8% | 44 |
| 6 | Suspension | 4.6% | 43 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 36 |
| 2 | Shock absorbers | 33 |
| 3 | Washers | 32 |
| 4 | Malfunction indicator lamp | 31 |
| 5 | Headlamp aim | 26 |
| 6 | On or after 01/01/2014 | 25 |
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 | 23.4% | 217 |
| 2 | Brakes | 11.8% | 109 |
| 3 | Suspension | 6.4% | 59 |
| 4 | Other defects | 6.3% | 58 |
| 5 | Visibility | 6.0% | 56 |
| 6 | Lighting & signalling | 3.0% | 28 |
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 | 267 | 16.1% |
| 30-60k | 413 | 17.4% |
| 60-90k | 184 | 18.5% |
| 90-120k | 39 | 17.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 462 | 18.6% |
| 2025 | 456 | 16.9% |
What to check before buying a 2021 Doblo 16V Tecnico Multijet Ii
Before buying a 2021 Fiat Doblo 16V Tecnico Multijet Ii, focus on the areas it most often fails on. Lighting & signalling accounted for 6.2% of tests for this year.
- Lighting & signalling (6.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (6.2% 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.
- Emissions & environmental (5.3% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
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 2021 Fiat Doblo 16V Tecnico Multijet Iis pass their MOT?
82.4% of the 927 2021 Fiat Doblo 16V Tecnico Multijet Ii MOT tests in this dataset passed — a 17.6% fail rate.
What is the most common MOT failure on a 2021 Fiat Doblo 16V Tecnico Multijet Ii?
Lighting & signalling, recorded in 6.2% of tests, followed by tyres (6.2%).
Does the 2021 Doblo 16V Tecnico Multijet Ii get worse with mileage?
Its MOT fail rate rises from 16.1% in the 0-30k band to 17.9% in the 90-120k band.
Methodology & source. Based on 927 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-01. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.