Jaguar XJ12 Series III

Jaguar XJ12 Series III

The Jaguar XJ12 Series III represents the ultimate development of the original XJ saloon concept that Sir William Lyons had introduced in 1968. The Series III, with its Pininfarina-refined bodywork and matured V12 engine, is widely regarded as the most complete expression of the classic XJ formula.

The 5.3-litre V12 engine, now equipped with Lucas digital electronic fuel injection, produced 295 horsepower and delivered power with the extraordinary smoothness that only a twelve-cylinder engine can achieve. The HE (High Efficiency) specification, introduced in 1981 with Michael May's fireball combustion chambers, significantly improved fuel economy while maintaining performance. The engine was mated exclusively to a three-speed GM400 automatic transmission.

Pininfarina's subtle restyling for the Series III, introduced in 1979, raised the roofline slightly, increased glass area, and added a more contemporary appearance while respecting the original Lyons design. The result was arguably the most elegant version of the XJ, with improved headroom and interior light that addressed criticisms of the earlier cars without compromising the fundamental beauty of the shape.

Driving the XJ12 Series III was a uniquely satisfying experience. The V12 delivered its considerable power in an unbroken wave of torque, accompanied by a muted but distinctive mechanical note. The ride quality was exceptional, with the independent suspension absorbing road imperfections with an almost supernatural calm. Yet the car could be driven with surprising enthusiasm through corners, the sophisticated chassis maintaining composure well beyond what the car's size might suggest.

The interior epitomized traditional British luxury, with deep leather seats, extensive walnut veneer, deep-pile carpeting, and an array of instruments and controls arranged with careful attention to the driver's needs. Air conditioning, power windows, and central locking were standard, along with a level of craftsmanship that few manufacturers could match.

The Series III XJ12 became the transport of choice for those who valued refinement above all else. It was frequently compared favorably with the Mercedes-Benz S-Class and BMW 7 Series of the era, offering a different but equally valid interpretation of the luxury saloon concept. Many automotive journalists rated it the finest-riding car in the world.

Production continued until 1992, an extraordinarily long run that testified to the fundamental rightness of the design. Approximately 10,500 XJ12 Series III models were produced. Today, the car offers a remarkably accessible entry point to V12 motoring, with prices that belie the quality of the engineering and the richness of the driving experience.