The JAGUAR XJ (2015-21) 4DR SALOON LWB 3.0D V6 DPFR SS 300 EU6 PORTFOLIO AUTO8 is a long-wheelbase luxury saloon, aimed at the premium end of the UK used-car market. Its extended cabin gives rear passengers extra room, making it a distinctive alternative to executive saloons rather than a family hatchback or SUV. Mycarcheck.com has recorded 197 look-ups covering 77 distinct VINs, offering a snapshot, though not a full reliability verdict. Checks show an average private-sale valuation of £22,800 and 48,000 miles recorded, with average annual use of 7,000 miles. The cars averaged about 1.5 previous keepers, suggesting relatively modest ownership changes. The 3.0-litre diesel suits long-distance travel and motorway commuting, while the automatic gearbox and Portfolio trim favour relaxed, well-equipped journeys. It is best for buyers wanting comfort, presence and rear-seat space, and can rival German luxury saloons with a more individual British character. Check service history and condition carefully.