2017 Mitsubishi Asx — MOT failures & pass rate
Across 22,340 MOT tests, the 2017 Mitsubishi Asx recorded an 89.1% pass rate. Small SUVs of a similar age fail at 11.9%, so the 2017 Asx sits squarely on the average. Failures cluster in brakes, tyres and visibility.
What the MOT record shows
No single area dominates — brakes (5.1%) and tyres (3.6%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, brake pads and tread depth — wipers alone was recorded 829 times.
Mileage is the strongest signal on the record: 6.0% of 0-30k cars fail, rising to 21.9% once past 150k — 3.7× the risk.
Fuel type barely separates them — petrol fails 10.4% of the time against 11.3% for diesel.
Advisories point at the next bill rather than this one: brakes was flagged on 23.3% of tests without failing them.
The trend is worsening — 7.3% of tests failed in 2021 against 15.1% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 5.1% | 1,141 |
| 2 | Tyres | 3.6% | 803 |
| 3 | Visibility | 3.5% | 774 |
| 4 | Lighting & signalling | 2.9% | 639 |
| 5 | Suspension | 1.4% | 311 |
| 6 | Steering | 0.6% | 135 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 829 |
| 2 | Brake pads | 789 |
| 3 | Tread depth | 640 |
| 4 | Headlamp aim | 463 |
| 5 | Rigid brake pipes | 267 |
| 6 | Rbt (sp) | 241 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 23.3% | 5,198 |
| 2 | Tyres | 22.4% | 5,000 |
| 3 | Other defects | 7.2% | 1,602 |
| 4 | Suspension | 5.2% | 1,167 |
| 5 | Visibility | 3.0% | 680 |
| 6 | Steering | 2.1% | 462 |
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 | 5,388 | 6.0% |
| 30-60k | 11,519 | 10.4% |
| 60-90k | 4,408 | 15.6% |
| 90-120k | 852 | 21.1% |
| 120-150k | 131 | 22.9% |
| 150k+ | 41 | 21.9% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 12,044 | 11.3% |
| Petrol | 10,296 | 10.4% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 4,340 | 7.3% |
| 2022 | 4,432 | 8.9% |
| 2023 | 4,419 | 10.0% |
| 2024 | 4,508 | 12.7% |
| 2025 | 4,641 | 15.1% |
What to check before buying a 2017 Asx
On a 2017 Asx, brakes is what the MOT record says goes wrong most — it appeared in 5.1% of tests. Check these areas before you commit.
- Brakes (5.1% 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 (3.6% 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.
- Visibility (3.5% of tests): Wipers, washers, mirrors and screen damage — usually inexpensive, but check for chips in the driver's line of sight. Typical repair: £15–£150.
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 2017 Mitsubishi Asxs pass their MOT?
89.1% of the 22,340 2017 Mitsubishi Asx MOT tests in this dataset passed — a 10.9% fail rate.
What is the most common MOT failure on a 2017 Mitsubishi Asx?
Brakes, recorded in 5.1% of tests, followed by tyres (3.6%).
Does the 2017 Asx get worse with mileage?
Its MOT fail rate rises from 6.0% in the 0-30k band to 21.9% in the 150k+ band.
Methodology & source. Based on 22,340 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.