2015 Jeep Grand Cherokee — MOT failures & pass rate
Across 7,993 MOT tests, the 2015 Jeep Grand Cherokee recorded an 86.4% pass rate. Large SUVs of a similar age fail at 13.7%, so the 2015 Grand Cherokee sits squarely on the average. Failures cluster in brakes, lighting & signalling and tyres.
What the MOT record shows
No single area dominates — brakes (6.2%) and lighting & signalling (4.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are brake pads, tread depth and wipers — brake pads alone was recorded 189 times.
Condition tracks the odometer closely. Failures run at 5.8% in the 0-30k band and 23.5% in the 150k+ band, a 17.7-point spread — more than double.
Advisories point at the next bill rather than this one: brakes was flagged on 22.0% of tests without failing them.
The trend is worsening — 12.3% of tests failed in 2021 against 15.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 6.2% | 499 |
| 2 | Lighting & signalling | 4.1% | 330 |
| 3 | Tyres | 3.4% | 269 |
| 4 | Visibility | 2.9% | 228 |
| 5 | Suspension | 1.8% | 141 |
| 6 | Steering | 1.1% | 91 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Brake pads | 189 |
| 2 | Tread depth | 175 |
| 3 | Wipers | 149 |
| 4 | Washers | 127 |
| 5 | Rbt (sp) | 119 |
| 6 | Decelerometer (sp) | 114 |
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 | 22.0% | 1,762 |
| 2 | Tyres | 19.9% | 1,590 |
| 3 | Other defects | 5.5% | 443 |
| 4 | Suspension | 5.2% | 418 |
| 5 | Visibility | 3.2% | 258 |
| 6 | Steering | 2.8% | 226 |
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 | 363 | 5.8% |
| 30-60k | 2,868 | 11.1% |
| 60-90k | 3,097 | 14.4% |
| 90-120k | 1,306 | 17.2% |
| 120-150k | 274 | 20.1% |
| 150k+ | 85 | 23.5% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 7,580 | 13.7% |
| Petrol | 407 | 10.8% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,624 | 12.3% |
| 2022 | 1,608 | 12.3% |
| 2023 | 1,604 | 13.0% |
| 2024 | 1,605 | 15.1% |
| 2025 | 1,552 | 15.3% |
What to check before buying a 2015 Grand Cherokee
On a 2015 Grand Cherokee, brakes is what the MOT record says goes wrong most — it appeared in 6.2% of tests. Check these areas before you commit.
- Brakes (6.2% 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.
- Lighting & signalling (4.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (3.4% 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 Jeep Grand Cherokees pass their MOT?
86.4% of the 7,993 2015 Jeep Grand Cherokee MOT tests in this dataset passed — a 13.6% fail rate.
What is the most common MOT failure on a 2015 Jeep Grand Cherokee?
Brakes, recorded in 6.2% of tests, followed by lighting & signalling (4.1%).
Does the 2015 Grand Cherokee get worse with mileage?
Its MOT fail rate rises from 5.8% in the 0-30k band to 23.5% in the 150k+ band.
Methodology & source. Based on 7,993 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.