Background
The flagship of Jaguar’s four-door model range in the latter half of the 20th century, the first-generation Jaguar XJ was produced between 1968 and 1992, across three easily identifiable revisions (or ‘Series’ as Jaguar called them) each of which represented both significant mechanical and aesthetic upgrades over the preceding series.
The Series III XJ was introduced in 1979, boasting a subtle exterior redesign by the famed Pininfarina design house, incorporating thicker bumpers, flush door handles, one-piece front glass and a revised roof line to ‘tidy up’ the lines of the bodywork.
Engine choices ranged from the 5.3-litre V12 to the 3.4-litre straight-six, with all three of the Jaguar engines (5.3 V12, 4.2 and 3.4 I6) carried across from the S2 model with minimal changes, though the 4.2-litre inline six and the V12 engine received Bosch fuel injection, whilst the 3.4-litre model retained its carburettor-fed fuelling system.
For the 1984 model year, the ‘Sovereign’ badge was carried across from the Daimler line to the Jaguar range for the first time, with the Sovereign models representing the top-end of the XJ range.
Both of the six-cylinder variants remained in production until they were replaced by the XJ40 in 1987, whilst the V12 variant continued until 1992, with a total of 318,000 first-generation XJ models produced.







