The JAGUAR XJ (2003-07) XJ6 4DR SALOON LWB 2.7 TDVI SOVEREIGN AUTO6 is a full-size luxury saloon with four doors and a long-wheelbase body that adds rear-seat space. It sits in the UK market as a flagship-style alternative to used BMW 7 Series and Mercedes-Benz S-Class models. The diesel automatic is suited to relaxed journeys, and the roomy cabin makes this XJ appealing for business travel, chauffeur duties or comfortable touring. It best suits drivers who value refinement and presence over easy parking or low running costs; check service and ownership history. mycarcheck.com has recorded 133 checks covering 59 distinct VINs, a useful sample rather than a complete picture of every car. Those records show an average private-sale valuation of £5,500, average recorded mileage of 123,000 and around four previous keepers. Average annual mileage is 3,000, suggesting some examples may have seen relatively light recent use, though individual histories vary.