The Jaguar XJ is a series of different Jaguar’s most luxurious sedans. The series was built from 1968 to 2019, and the abbreviation stands for ‘eXperimental Jaguar’, which explains much of the cars’ uniqueness. Over the decades, the XJ series had a range of different model codes and names, often based on the splendid engine configuration. In addition to offering ‘ordinary luxury’, Jaguar decided to offer ‘supreme luxury’ under its subsidiary brand, Daimler.
Jaguar XJ Series III
As the name suggests, the XJ Series III is the third evolution of Jaguar's XJ series. This third evolution, introduced in 1979, brought a fresh breeze to Jaguar's XJ lineup. The roofline was elegantly ‘Italianized’ and designed by Pininfarina, while the lights, bumpers, and wheels also underwent slight modifications to modernize the appearance. What remained unchanged, and rightfully so, were the engines. People had the choice of a 3.4-liter or 4.2-liter straight-six or a whopping 5.3-liter V12 engine.
The XJ Series III served as a transitional model while enthusiasts awaited the almost entirely new XJ40. Facing financial trouble, Jaguar and its parent company British Leyland relied on the Series III to heal the financial wounds. It succeeded admirably, approximately 130,000 models sold. Initially regarded as a somewhat derogatory ‘transitional model’, it goes down in history as ‘Jaguar's guardian angel’. The Series III with the V12 engine was even available until 1992.
Daimler Double-Six Series III
Daimler is the British brand that assisted giving birth to the first modern motorcycle and the first gasoline engine ever. Their core business was producing cars for people who would settle for nothing but the best, resulting in luxury and prestige associated that was never seen before. Today, it is the longest British automotive brand in existence and has been adopted several times, including by Jaguar.
Jaguar wanted to equip the XJ Series III with a Daimler badge. The V12 version was considered luxurious enough to bear the Daimler badge, so not many modifications were made. However, the name had to sound meaningful and have a significant origin, ‘Double-Six’ was chosen, referring to powerful engines of the same name that Daimler had developed in the twenties.
The Double-Six Series III is constructed so innovatively that it doesn't reveal its age. It is a car for those who appreciate British elegance with true Jaguar V12 power under the hood. A remarkable classic.
Technical information:
Body work
Mechanics