2018 Jeep Grand Cherokee — MOT failures & pass rate
Across 2,274 MOT tests, the 2018 Jeep Grand Cherokee recorded a 90.6% pass rate. That is effectively the same as large SUVs of a similar age (10.3% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in visibility, tyres and lighting & signalling.
What the MOT record shows
No single area dominates — visibility (3.4%) and tyres (3.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, tread depth and headlamp aim — wipers alone was recorded 63 times.
Condition tracks the odometer closely. Failures run at 7.3% in the 0-30k band and 20.4% in the 90-120k band, a 13.1-point spread — more than double.
Brakes is the most common advisory, noted on 16.5% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Visibility | 3.4% | 77 |
| 2 | Tyres | 3.3% | 74 |
| 3 | Lighting & signalling | 3.1% | 70 |
| 4 | Brakes | 2.9% | 66 |
| 5 | Suspension | 0.8% | 18 |
| 6 | Emissions & environmental | 0.6% | 14 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 63 |
| 2 | Tread depth | 61 |
| 3 | Headlamp aim | 42 |
| 4 | Washers | 27 |
| 5 | Brake discs | 27 |
| 6 | Brake pads | 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 | Brakes | 16.5% | 375 |
| 2 | Tyres | 16.2% | 369 |
| 3 | Other defects | 5.4% | 123 |
| 4 | Visibility | 3.6% | 83 |
| 5 | Suspension | 2.5% | 56 |
| 6 | Lighting & signalling | 1.7% | 38 |
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 | 680 | 7.3% |
| 30-60k | 1,097 | 9.0% |
| 60-90k | 385 | 10.7% |
| 90-120k | 88 | 20.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 2,226 | 9.3% |
| Petrol | 48 | 12.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 483 | 8.9% |
| 2022 | 462 | 9.1% |
| 2023 | 436 | 8.3% |
| 2024 | 448 | 10.5% |
| 2025 | 445 | 10.3% |
What to check before buying a 2018 Grand Cherokee
The failure pattern for this year is specific enough to inspect against: visibility accounted for 3.4% of tests. Start there.
- Visibility (3.4% 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.
- Tyres (3.3% 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.
- Lighting & signalling (3.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£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 2018 Jeep Grand Cherokees pass their MOT?
90.6% of the 2,274 2018 Jeep Grand Cherokee MOT tests in this dataset passed — a 9.4% fail rate.
What is the most common MOT failure on a 2018 Jeep Grand Cherokee?
Visibility, recorded in 3.4% of tests, followed by tyres (3.3%).
Does the 2018 Grand Cherokee get worse with mileage?
Its MOT fail rate rises from 7.3% in the 0-30k band to 20.4% in the 90-120k band.
Methodology & source. Based on 2,274 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.