1994 Jaguar XJ — MOT failures & pass rate
1,394 MOT tests on the 1994 Jaguar XJ are in this dataset, and 82.3% of them passed. Executive cars of a similar age fail 20.9% of the time, so this is 3.1pp better than the group it competes with. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (8.0%) and brakes (6.0%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, position lamp and washers — catalyst emissions alone was recorded 60 times.
A 150k+ example is materially riskier than a 0-30k one: 17.0% versus 6.1%.
Advisories point at the next bill rather than this one: suspension was flagged on 32.6% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.0% | 111 |
| 2 | Brakes | 6.0% | 84 |
| 3 | Suspension | 5.7% | 80 |
| 4 | Visibility | 5.4% | 75 |
| 5 | Body, structure & corrosion | 4.5% | 63 |
| 6 | Emissions & environmental | 3.2% | 44 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 60 |
| 2 | Position lamp | 56 |
| 3 | Washers | 52 |
| 4 | Component mounting prescribed areas | 47 |
| 5 | Headlamp aim | 42 |
| 6 | Service brake performance | 42 |
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 | 32.6% | 454 |
| 2 | Brakes | 19.1% | 267 |
| 3 | Tyres | 18.6% | 259 |
| 4 | Emissions & environmental | 14.9% | 208 |
| 5 | Body, structure & corrosion | 11.7% | 163 |
| 6 | Other defects | 7.5% | 105 |
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 | 49 | 6.1% |
| 30-60k | 176 | 13.6% |
| 60-90k | 414 | 16.2% |
| 90-120k | 414 | 18.6% |
| 120-150k | 236 | 24.6% |
| 150k+ | 100 | 17.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 355 | 16.9% |
| 2022 | 332 | 20.5% |
| 2023 | 261 | 17.6% |
| 2024 | 230 | 14.8% |
| 2025 | 216 | 18.1% |
What to check before buying a 1994 XJ
On a 1994 XJ, lighting & signalling is what the MOT record says goes wrong most — it appeared in 8.0% of tests. Check these areas before you commit.
- Lighting & signalling (8.0% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (6.0% 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 (5.7% 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 1994 Jaguar XJs pass their MOT?
82.3% of the 1,394 1994 Jaguar XJ MOT tests in this dataset passed — a 17.7% fail rate.
What is the most common MOT failure on a 1994 Jaguar XJ?
Lighting & signalling, recorded in 8.0% of tests, followed by brakes (6.0%).
Does the 1994 XJ get worse with mileage?
Its MOT fail rate rises from 6.1% in the 0-30k band to 17.0% in the 150k+ band.
Methodology & source. Based on 1,394 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.