1998 Jeep Wrangler Sahara — MOT failures & pass rate
Across 278 MOT tests, the 1998 Jeep Wrangler Sahara recorded a 74.1% pass rate. That is effectively the same as all cars of a similar age (25.6% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 18.4% of tests against 10.8% for the next-worst category.
At component level the recurring items are position lamp, headlamp aim and headlamp — position lamp alone was recorded 19 times.
Condition tracks the odometer closely. Failures run at 22.4% in the 60-90k band and 27.4% in the 120-150k band, a 5.0-point spread.
Suspension is the most common advisory, noted on 31.6% of tests — work that passed today but is likely due soon.
The trend is worsening — 22.0% of tests failed in 2021 against 27.5% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 18.4% | 51 |
| 2 | Brakes | 10.8% | 30 |
| 3 | Suspension | 8.6% | 24 |
| 4 | Seat belts & restraints | 4.3% | 12 |
| 5 | Emissions & environmental | 4.3% | 12 |
| 6 | Body, structure & corrosion | 3.6% | 10 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Position lamp | 19 |
| 2 | Headlamp aim | 19 |
| 3 | Headlamp | 17 |
| 4 | Service brake imbalance | 14 |
| 5 | Stop lamp | 14 |
| 6 | Catalyst emissions | 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 | Suspension | 31.6% | 88 |
| 2 | Brakes | 28.4% | 79 |
| 3 | Body, structure & corrosion | 15.8% | 44 |
| 4 | Emissions & environmental | 13.0% | 36 |
| 5 | Other defects | 11.5% | 32 |
| 6 | Tyres | 11.5% | 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 |
|---|---|---|
| 60-90k | 98 | 22.4% |
| 90-120k | 61 | 24.6% |
| 120-150k | 62 | 27.4% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 59 | 22.0% |
| 2022 | 58 | 22.4% |
| 2023 | 61 | 32.8% |
| 2024 | 49 | 24.5% |
| 2025 | 51 | 27.5% |
What to check before buying a 1998 Wrangler Sahara
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 18.4% of tests. Start there.
- Lighting & signalling (18.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (10.8% 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 (8.6% 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 1998 Jeep Wrangler Saharas pass their MOT?
74.1% of the 278 1998 Jeep Wrangler Sahara MOT tests in this dataset passed — a 25.9% fail rate.
What is the most common MOT failure on a 1998 Jeep Wrangler Sahara?
Lighting & signalling, recorded in 18.4% of tests, followed by brakes (10.8%).
Does the 1998 Wrangler Sahara get worse with mileage?
Its MOT fail rate rises from 22.4% in the 60-90k band to 27.4% in the 120-150k band.
Methodology & source. Based on 278 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.