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Though worldwide production of the Series II ended in 1979, a number were produced in Cape Town, South Africa until 1981.
An 8,378-car run of 2-door XJ coupés with a pillarless hardtop body called the XJ-C was built between 1975 and 1978. The coupé was based on the short wheelbase version of the XJ. The coupé’s elongated doors were made out of a lengthened standard XJ front door (the weld seams are clearly visible under the interior panels where two front door shells were grafted together with a single outer skin). A few used Jaguar XJ-Cs were modified by Avon into convertibles with a retractable canvas top, but this was not a factory product. Both six and twelve-cylinder models were offered, 6,505 of the former and 1,873 of the latter. Jaguar had intended to introduce the car as early as 1973, but problems with window sealing delayed production. Even with the delay, these cars suffered from water leaks and wind noise. The delayed introduction, the labour-intensive work required by the modified saloon body, the higher price than the four door car, and the early demise promulgated by the new XJ-S, all ensured a small production run. All coupes came with a vinyl roof as standard. It has been speculated that this is due to the rough welds around the windows of the roof, however many owners have removed these roofs and found no such rough welds.[citation needed] Other explanations point out that all V12 Jaguars received vinyl roofs at this time to signify the introduction of fuel injection, but this doesn’t explain the vinyl roof on the 6 cylinder cars. Today many XJ-Cs no longer have their vinyl roof, also removing the threat of roof rust.
A small number of Daimler versions of the XJ-C were made.