The JAGUAR XJ (2003-07) XJ6 4DR SALOON 2.7 TDVI SOVEREIGN AUTO6 is a large, four-door luxury saloon, aimed at buyers seeking comfort and prestige rather than a small, low-cost runabout. In the UK used-car market, it sits among premium executive cars, competing with established German saloons while offering distinctive Jaguar styling. mycarcheck.com recorded 582 look-ups covering 237 VINs, a snapshot of buyer interest. Its checks show an average private-sale valuation of £4,900 and average recorded mileage of 120,000 miles; typical annual mileage is 4,000. Owners had averaged almost four previous keepers, so checking each car’s history and condition is especially worthwhile. The diesel XJ suits long-distance commuters and buyers wanting a spacious, refined car for comfortable journeys, but is less natural for tight city parking or budget motoring. Sovereign trim, relaxed ride and automatic help it stand apart from rivals. Budget for premium-car running costs and check maintenance records carefully beforehand.