The Jaguar XJ-S, later the Jaguar XJS, was a luxury grand tourer produced by Jaguar. The XJ-S replaced the legendary E-Type (or XK-E) in September 1975, and was based on the XJ saloon. It was developed as the XK-F, though it was very different in character from its predecessor. Although it never had quite the same sporting image, the XJ-S was a competent grand tourer, and more aerodynamic than the E-Type. The last XJS was produced on April 4, 1996, with the XK8 taking its place.
First, the XJ-S appeared in 1975 as a 1976 model. Power came from the Jaguar V-12 with a choice of a manual or automatic transmission, but the manual was soon dropped. V-12 automobiles were unusual at the time, with notable others coming from Italian luxury sports car makers Lamborghini and Ferrari. The specifications of the XJ-S compared well with both Italian cars; it was able to accelerate to 60 mph (97 km/h) in 8.9 seconds and reach 142 mph (229 km/h). The first series of XJ-S cars had a Borg-Warner Model 12 transmission with a cast iron case and a bolt-on bell-housing. In 1979 GM Turbo-Hydromatic 400 transmissions were fitted. The TH400 transmission was an all aluminum alloy case with an integrated non-detachable bell-housing.
Jaguar's timing was not good; the car was launched in the wake of a fuel crisis, and the market for a 5.3-litre V12 grand tourer was very small. The styling was also the subject of criticism, including the "flying buttresses" behind the windows.
Jaguar seized promotional opportunities with the television series The New Avengers and Return of the Saint. The New Avengers featured Mike Gambit (Gareth Hunt) who drove an XJ-S. Reliability issues meant that three XJ-S cars were used. Return of the Saint saw Simon Templar (played by Ian Ogilvy) driving an early XJ-S with the number plate "ST 1". Miniature versions were made by Corgi and proved popular. A decade and a half before, Jaguar had turned down the producers of the earlier Saint series when approached about the E-type; the producers had instead used a Volvo P1800.
Responding to criticisms that the XJ-S was not a worthy E-type successor, Pininfarina revealed a sporty show car in 1978 based on XJ-S mechanicals and called Jaguar XJSpider. The car never went into production.