Jaguar Xj8 Auto (1999)
1999 Jaguar Xj8 Auto
CarHunch analysed 135 real MOT records for the 1999 Jaguar Xj8 Auto. This breakdown of actual test outcomes — pass rates, defect profiles, mileage data — isn't published anywhere else.
The 1999 Jaguar XJ8 Auto is a serious reliability concern, with just a 12.7% first-time pass rate compared to the UK average of 80%—meaning nearly 9 in 10 of these cars fail their MOT. Petrol variants perform particularly badly at 0% pass rate, and while dangerous defects are rare, the sheer volume of failures suggests chronic mechanical issues lurking across the fleet.
At nearly 92,000 miles on average, these cars are well-used but still relatively low-mileage for their age, yet they're still failing tests at an alarming rate—this isn't a story of worn-out, high-mileage vehicles but rather systemic design or maintenance problems inherent to the model. If you're considering one, budget heavily for immediate remedial work and get a pre-purchase inspection from a specialist who knows these engines well, because the MOT data shows you're highly likely to be facing costly repairs within weeks of purchase.
What to check before buying a 1999 Jaguar Xj8 Auto
Practical pre-purchase checks for this age and model.
- 📋 Check the full MOT history. Look for recurring advisories — slow-building issues like corrosion or brake wear patterns show up years before they become failures. Enter the reg below for a full AI analysis.
- 🔍 Inspect for corrosion in person. Brake pipes, sills, subframes, and chassis legs. Surface rust is normal at this age; structural rust is a serious problem that's expensive to fix and can fail an MOT.
- 🛞 Check tyres and brakes. The most common advisory items at this age. Budget for replacement if they're near the limit — factor this into your offer price.
- 📄 Run an HPI check. The MOT history won't show outstanding finance, insurance write-offs, or stolen status — an HPI check will.
Before you buy a Jaguar Xj8 Auto
MOT history is one piece of the puzzle. These checks can reveal what CarHunch can't.
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (84%) | 114 | 0% | 0 |
| Other (16%) | 21 | 81.5% | 0.57 |
MOT History Averages
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