2021 Fiat Ducato 42 Maxi M-Jet Power A — MOT failures & pass rate
Across 392 MOT tests, the 2021 Fiat Ducato 42 Maxi M-Jet Power A recorded a 96.4% pass rate. That is 3.7 percentage points better than all cars of a similar age, which fail at 7.3%. Failures cluster in lighting & signalling, brakes and tyres.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 5.4% of tests against 0.8% for the next-worst category.
At component level the recurring items are headlamp aim, side repeaters and headlamp — headlamp aim alone was recorded 13 times.
Mileage matters less than usual here: the 2021 Ducato 42 Maxi M-Jet Power A fails 3.9% of the time in the 0-30k band and 2.0% at 90-120k, a spread of only 1.8 points.
The trend is worsening — 2.2% of tests failed in 2022 against 5.8% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 5.4% | 21 |
| 2 | Brakes | 0.8% | 3 |
| 3 | Tyres | 0.5% | 2 |
| 4 | Body, structure & corrosion | 0.3% | 1 |
| 5 | Emissions & environmental | 0.3% | 1 |
| 6 | Steering | 0.3% | 1 |
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 | 13 |
| 2 | Side repeaters | 9 |
| 3 | Headlamp | 5 |
| 4 | Parking (secondary brake performance) | 1 |
| 5 | Rbt (sp) | 1 |
| 6 | Service brake performance | 1 |
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 | 3.1% | 12 |
| 2 | Other defects | 1.5% | 6 |
| 3 | Tyres | 1.5% | 6 |
| 4 | Brakes | 1.3% | 5 |
| 5 | Visibility | 1.0% | 4 |
| 6 | Lighting & signalling | 1.0% | 4 |
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 | 130 | 3.9% |
| 30-60k | 91 | 3.3% |
| 60-90k | 102 | 3.9% |
| 90-120k | 49 | 2.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 90 | 2.2% |
| 2023 | 103 | 2.9% |
| 2024 | 95 | 3.2% |
| 2025 | 104 | 5.8% |
What to check before buying a 2021 Ducato 42 Maxi M-Jet Power A
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 5.4% of tests. Start there.
- Lighting & signalling (5.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (0.8% 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.
- Tyres (0.5% 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 2021 Fiat Ducato 42 Maxi M-Jet Power As pass their MOT?
96.4% of the 392 2021 Fiat Ducato 42 Maxi M-Jet Power A MOT tests in this dataset passed — a 3.6% fail rate.
What is the most common MOT failure on a 2021 Fiat Ducato 42 Maxi M-Jet Power A?
Lighting & signalling, recorded in 5.4% of tests, followed by brakes (0.8%).
Does the 2021 Ducato 42 Maxi M-Jet Power A get worse with mileage?
Its MOT fail rate rises from 3.9% in the 0-30k band to 2.0% in the 90-120k band.
Methodology & source. Based on 392 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.