The Jaguar XJ of 1990 was also a part of the XJ40 generation, which was produced by Jaguar from 1986 to 1994. The 1990 XJ was a full-size luxury sedan with a classic, elegant exterior design that combined traditional styling with modern elements.

The 1990 Jaguar XJ was available in several different trim levels, including the XJ6, Sovereign, and Vanden Plas. These models were powered by a 4.0-liter inline six-cylinder engine that produced 223 horsepower and 278 lb-ft of torque. The engine was paired with a four-speed automatic transmission.

The XJ of 1990 had a spacious and luxurious interior with high-quality materials, leather seats, and wood trim. It also featured a range of luxury and convenience features, such as power windows, power locks, power mirrors, air conditioning, and a premium audio system.

Safety features of the 1990 Jaguar XJ included anti-lock brakes, traction control, and driver and passenger airbags.

Overall, the 1990 Jaguar XJ was a highly desirable luxury sedan for those who appreciated classic design, advanced technology, and refined driving experience. It remains a popular choice for classic car enthusiasts and collectors today.