The XJ13 was a stunning one-off concept car completed by Jaguar in March 1966 and was designed to compete at Le Mans to develop and promote their new V12 engine. By the mid-60s Le Mans was dominated by mid-engined Sports Racing cars such as the Ford GT40 so it was no surprise when the XJ13 appeared with its V12 mounted longitudinally behind the driver.
The body was of monocoque construction, built from 18 gauge aluminium sheeting, with double bulkheads at the front attached to two broad, deep sills.
There was a stressed floor and a single bulkhead behind the driving compartment to which the V12 engine was attached. This
whole structure was clothed with a smooth flowing aluminium skin, with an open driver's compartment and a clear perspex canopy over the rear engine bay.
But it was developed too late to be competitive and by late 1966 Jaguar was taken over by the British Motor Corporation (BMC). The project was shelved and the XJ13 was put into storage. The next time the car was seen was in 1971 when it was taken to the MIRA circuit to make a promotional film for the official release of the V12 engine. But something went wrong and the car crashed and was extensively damaged, fortunately without injury to Jaguar's famous test driver, Norman Dewis. It was later rebuilt and is now on display in the Jaguar Museum in England.

As a one-off development exercise it was never put into production or driven on the road, a decision that was greatly regretted by Jaguar enthusiasts worldwide.

However, the concept has by no means died. At Temperos we have a love of all things Jaguar and in the early 1990's we undertook a project to develop the XJ13 to its logical stage. A major target was to ensure our recreation was faithful to the original concept developed by Derrick White and Malcom Sayer in the 1960's. Accordingly, intensive efforts were made during the development phase to ensure the total accuracy of the Tempero car when compared to the original car in the Jaguar museum

Jaguar's one-off XJ13 was a prototype that was never designed for the rigours of long term use. It was built to race just once at Le Mans and so was made as light as possible with no concessions to comfort, durability or longevity. In contrast Tempero's cars are designed to last for generations and so have to be tough and durable, with a fanatical attention to detail to satisfy the exacting standards of modern buyers.


Built by craftsmen to the highest standards, the body of the Tempero XJ13 faithfully follows the fabulous style of the original prototype but has been considerably strengthened by the use of 16 gauge aluminium sheeting in place of Jaguar's 18 gauge. The small weight penalty is more than offset by the improved durability of the car

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