Jaguar Xj (2003)
2003 Jaguar Xj
CarHunch analysed 3,100 real MOT records for the 2003 Jaguar Xj.
Real test outcomes — pass rates, defect profiles, mileage data — from verified DVLA records. Updated as new MOTs are recorded.
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The 2003 Jaguar XJ's first-time pass rate of 79.5% sits just fractionally below the UK average of 80%, suggesting reliability that's broadly in line with other cars of this age—but the concerning figure here is that 39.3% of examples have experienced a dangerous defect at some point, well above what you'd want to see in a used purchase. This is a real buyer concern that warrants a thorough pre-purchase inspection.
At a median mileage of 80,947 miles for a 21-year-old car, these XJs are sitting right where you'd expect them to be. The average vehicle fails on 4.24 items and racks up 24 advisories per test, painting a picture of an ageing luxury saloon that develops niggles steadily—suspension wear, fluid leaks, and electrical gremlins are typical—so budget for maintenance and always have a specialist pre-purchase inspection focus on brake safety and suspension geometry before committing.
The 2003 Jaguar Xj has a decent first-time pass rate (79.5%), but a higher-than-average share of vehicles have had serious defects recorded — the individual vehicle's history matters a lot here.
These stats describe 3,100 vehicles as a group. The specific vehicle you're looking at could be the one good example or the one outlier. Run its registration to find out.
What tends to go wrong
Across 3,100 vehicles — figures show how many had each issue flagged at least once in their MOT history.
Data covers a 3-year window centred on 2003.
See this vehicle's full MOT history & AI hunches
Spot recurring advisories, hidden issues, and how it compares to 3,100 Jaguar Xj cars.
Before you buy a 2003 Jaguar Xj
Based on MOT data from 3,100 vehicles — here's what to check.
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Check the full MOT history.
39.3% of these vehicles have had a dangerous defect recorded -
recurring advisories often signal problems years before they become failures.
Search the reg on CarHunch for the full MOT history, reliability stats and a free AI-powered analysis of that exact vehicle. -
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Brake pipes, sills and subframes are the key areas on a vehicle this age — structural rust is hard to spot without getting underneath. A mechanic will check all of this before you commit, and give you a concrete basis to negotiate on price.
Inspection
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Outstanding finance, insurance write-offs and clocking won't appear in the MOT records — a dedicated history check covers all of this. Our link gets you 20% off automatically.
History
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Pass Rate by Fuel Type
| Fuel type | Vehicles | Pass rate | Avg failures |
|---|---|---|---|
| Petrol (99%) | 3,071 | 79.5% | 4.24 |
Colour Breakdown
Based on 79,443 Jaguar Xj vehicles registered in the UK — across all years. From DVLA registration records.
Mileage Distribution
Most 2003 Jaguar Xj vehicles sit in the blue band. If the vehicle you're looking at is outside it, it's either unusually low or high mileage for its age.
Half of all 2003 Jaguar Xj vehicles fall between 61,724 and 101,555 miles.
2003 Jaguar Xj — Still on the Road
Numbers are thinning — 54% of 2003 Jaguar Xjs are still active.
1,383 vehicles still getting MOTs in 2025 — 54% of the peak remain.
Based on vehicles from this manufacture year that had at least one MOT test in each calendar year. Data from 2014–2025.
* The 2020 dip reflects the government's COVID-19 MOT exemption, which allowed certificates to be extended by six months — fewer tests were conducted that year.
MOT History Averages
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Compare with another model
See how the 2003 Jaguar Xj stacks up against a rival.