2020 Jeep Wrangler — MOT failures & pass rate
The 2020 Jeep Wrangler passed 93.1% of its 1,819 recorded MOT tests. That is 2.3 percentage points better than large SUVs of a similar age, which fail at 9.2%. Failures cluster in lighting & signalling, visibility and emissions & environmental.
What the MOT record shows
No single area dominates — lighting & signalling (2.9%) and visibility (2.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are wipers, headlamp aim and washers — wipers alone was recorded 30 times.
Condition tracks the odometer closely. Failures run at 5.5% in the 0-30k band and 29.4% in the 90-120k band, a 23.9-point spread — more than double.
The trend is improving — the fail rate fell from 23.4% in 2021 to 7.9% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 2.9% | 52 |
| 2 | Visibility | 2.5% | 46 |
| 3 | Emissions & environmental | 1.4% | 26 |
| 4 | Tyres | 1.3% | 23 |
| 5 | Body, structure & corrosion | 1.1% | 20 |
| 6 | Brakes | 1.0% | 18 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Wipers | 30 |
| 2 | Headlamp aim | 29 |
| 3 | Washers | 20 |
| 4 | Malfunction indicator lamp | 16 |
| 5 | Rear fog lamp | 14 |
| 6 | Registration plates | 14 |
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 | 7.8% | 141 |
| 2 | Tyres | 6.3% | 115 |
| 3 | Other defects | 5.0% | 90 |
| 4 | Visibility | 4.4% | 80 |
| 5 | Suspension | 3.6% | 66 |
| 6 | Body, structure & corrosion | 1.8% | 32 |
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 | 1,095 | 5.5% |
| 30-60k | 614 | 8.0% |
| 60-90k | 65 | 7.7% |
| 90-120k | 34 | 29.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 1,448 | 6.8% |
| Diesel | 371 | 7.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 77 | 23.4% |
| 2023 | 583 | 5.1% |
| 2024 | 549 | 4.9% |
| 2025 | 582 | 7.9% |
What to check before buying a 2020 Wrangler
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 2.9% of tests. Start there.
- Lighting & signalling (2.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Visibility (2.5% 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.
- Emissions & environmental (1.4% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
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 2020 Jeep Wranglers pass their MOT?
93.1% of the 1,819 2020 Jeep Wrangler MOT tests in this dataset passed — a 6.9% fail rate.
What is the most common MOT failure on a 2020 Jeep Wrangler?
Lighting & signalling, recorded in 2.9% of tests, followed by visibility (2.5%).
Does the 2020 Wrangler get worse with mileage?
Its MOT fail rate rises from 5.5% in the 0-30k band to 29.4% in the 90-120k band.
Methodology & source. Based on 1,819 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.