XJ40 (1986-1994)

The intended replacement for the Series XJ was code-named XJ40, and development suffered a number of delays due to problems at parent company British Leyland and events such as the 1973 oil crisis. The XJ40 was finally introduced in 1986. The six-cylinder XJ40s were powered by the AJ6 inline-six engine, which replaced the XK6 unit used in earlier XJs. The new unit featured a four-valve, twin overhead cam design. In 1993, one year before XJ40 production ended, the V12 powered XJ12 model was reintroduced. In addition to mechanical and comfort upgrades to the XJ6, the XJ40 had a more modern design that resulted in significant improvements to manufacturing efficiency and quality control. Jaguar produced over 200,000 XJ40 models.