Isuzu D-Max Dl40 MOT pass rate & common failures
2,714 MOT tests on the Isuzu D-Max Dl40 (2021–2024) give it an 89.9% pass rate. Against all cars of a similar age (8.4% fail rate), the D-Max Dl40 comes out 1.6pp worse. Its most common failure areas are lighting & signalling, tyres and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (4.2%) and tyres (3.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, shock absorbers and tread depth — headlamp aim alone was recorded 98 times.
Mileage matters less than usual here: the D-Max Dl40 fails 7.8% of the time in the 0-30k band and 11.4% at 90-120k, a spread of only 3.6 points.
Tyres is the most common advisory, noted on 21.0% of tests — work that passed today but is likely due soon.
How it compares
By model year
Every D-Max Dl40 model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 2021 | 1,561 | 90.1% | 9.9% | Lighting & signalling |
| 2022 | 1,124 | 89.6% | 10.4% | Brakes |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 4.2% | 114 |
| 2 | Tyres | 3.5% | 95 |
| 3 | Brakes | 3.2% | 88 |
| 4 | Suspension | 1.8% | 50 |
| 5 | Emissions & environmental | 1.4% | 38 |
| 6 | Visibility | 1.0% | 28 |
| 7 | Body, structure & corrosion | 0.9% | 23 |
| 8 | Seat belts & restraints | 0.6% | 17 |
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 | 98 |
| 2 | Shock absorbers | 53 |
| 3 | Tread depth | 47 |
| 4 | Brake pads | 45 |
| 5 | Malfunction indicator lamp | 38 |
| 6 | Pedal | 19 |
| 7 | Wipers | 19 |
| 8 | Service brake performance | 18 |
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 | 21.0% | 571 |
| 2 | Brakes | 12.1% | 329 |
| 3 | Other defects | 5.9% | 160 |
| 4 | Suspension | 4.2% | 113 |
| 5 | Lighting & signalling | 2.6% | 72 |
| 6 | Visibility | 2.4% | 66 |
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 | 838 | 7.8% |
| 30-60k | 1,249 | 10.7% |
| 60-90k | 468 | 11.8% |
| 90-120k | 132 | 11.4% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2024 | 781 | 10.2% |
| 2025 | 1,922 | 9.9% |
What to check before buying a Isuzu D-Max Dl40
- Lighting & signalling (4.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (3.5% 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.
- Brakes (3.2% 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
What is the MOT pass rate for the Isuzu D-Max Dl40?
89.9% of the 2,714 Isuzu D-Max Dl40 MOT tests in this dataset passed, a 10.1% fail rate, across model years 2021–2024.
What does the Isuzu D-Max Dl40 most often fail its MOT on?
Lighting & signalling, recorded in 4.2% of tests, then tyres (3.5%).
How much does mileage affect D-Max Dl40 MOT results?
Fail rates run at 7.8% for cars in the 0-30k band and 11.4% for 90-120k, a 3.6-point difference.
Methodology & source. Based on 2,714 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.