The JAGUAR XJ (2015-21) 4DR SALOON 3.0D V6 DPFR SS 300 EU6 XJ50 AUTO8 is a full-size luxury saloon, sitting near the top of the UK executive-car market. It pairs a refined diesel engine with an automatic gearbox, offering a spacious, comfortable alternative to premium rivals such as the Mercedes-Benz S-Class and BMW 7 Series. Mycarcheck.com records 260 look-ups covering 99 distinct VINs, a useful snapshot of used-car interest. Across those checks, the average private-sale valuation was £27,600; recorded mileage averaged 36,000 miles, with annual mileage around 5,000 and about 1.4 previous keepers. That pattern suggests a low-mileage example may be worth seeking, though each car’s history should be checked. The XJ suits executives, frequent long-distance drivers and buyers wanting rear-seat comfort and understated occasion, rather than a compact family runabout. Its graceful styling, quiet cabin and smooth, confident ride give it a more distinctive feel than many German alternatives.