2003 Jeep Wrangler — MOT failures & pass rate
The 2003 Jeep Wrangler passed 80.0% of its 400 recorded MOT tests. Against large SUVs of a similar age (25.3% fail rate), the 2003 Wrangler comes out 5.3pp better. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
Lighting & signalling dominates the failure mix at 15.3% of all tests — 7.2 points clear of brakes, so it is the first thing to check.
At component level the recurring items are headlamp aim, service brake performance and rear fog lamp — headlamp aim alone was recorded 28 times.
A 120-150k example is materially riskier than a 30-60k one: 17.6% versus 12.6%.
Advisories point at the next bill rather than this one: suspension was flagged on 30.3% of tests without failing them.
The trend is worsening — 19.4% of tests failed in 2021 against 22.2% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 15.3% | 61 |
| 2 | Brakes | 8.0% | 32 |
| 3 | Suspension | 5.0% | 20 |
| 4 | Visibility | 4.5% | 18 |
| 5 | Body, structure & corrosion | 2.8% | 11 |
| 6 | Other defects | 2.0% | 8 |
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 | 28 |
| 2 | Service brake performance | 25 |
| 3 | Rear fog lamp | 20 |
| 4 | Headlamp | 17 |
| 5 | Registration plates | 13 |
| 6 | Position lamp | 13 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 30.3% | 121 |
| 2 | Brakes | 17.3% | 69 |
| 3 | Tyres | 11.0% | 44 |
| 4 | Lighting & signalling | 10.3% | 41 |
| 5 | Emissions & environmental | 9.3% | 37 |
| 6 | Body, structure & corrosion | 7.5% | 30 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 103 | 12.6% |
| 60-90k | 161 | 21.1% |
| 90-120k | 93 | 29.0% |
| 120-150k | 34 | 17.6% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 62 | 19.4% |
| 2022 | 78 | 17.9% |
| 2023 | 81 | 17.3% |
| 2024 | 89 | 22.5% |
| 2025 | 90 | 22.2% |
What to check before buying a 2003 Wrangler
On a 2003 Wrangler, lighting & signalling is what the MOT record says goes wrong most — it appeared in 15.3% of tests. Check these areas before you commit.
- Lighting & signalling (15.3% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (8.0% 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.
- Suspension (5.0% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
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 2003 Jeep Wranglers pass their MOT?
80.0% of the 400 2003 Jeep Wrangler MOT tests in this dataset passed — a 20.0% fail rate.
What is the most common MOT failure on a 2003 Jeep Wrangler?
Lighting & signalling, recorded in 15.3% of tests, followed by brakes (8.0%).
Does the 2003 Wrangler get worse with mileage?
Its MOT fail rate rises from 12.6% in the 30-60k band to 17.6% in the 120-150k band.
Methodology & source. Based on 400 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.