Jaguar XJ12 (Series 3)

The Jaguar XJ12 was introduced in 1979 as part of the Series 3 generation. It features a 5.3L V12 engine producing 285 hp, paired with a 3-speed automatic transmission. This sedan variant offers luxury features and a spacious interior, making it one of the flagship models for Jaguar during its production run. It was known for its smooth ride and refined performance.

The Jaguar XJ12 Vanden Plas was introduced in 1980 as a more luxurious variant of the XJ12. It retains the 5.3L V12 engine producing 285 hp and features additional luxury appointments, such as upgraded leather interiors and enhanced audio systems. This variant was particularly popular in North America, emphasizing comfort and elegance.

The Jaguar XJ12 Sovereign was introduced in 1983 as a high-end variant of the XJ12. It features the same 5.3L V12 engine but comes with additional luxury features, including a more refined interior and advanced technology for its time. The Sovereign variant is known for its exceptional comfort and exclusivity.

The Jaguar XJ12 Long Wheelbase was introduced in 1986, providing additional rear-seat legroom and luxury features. It maintains the 5.3L V12 engine and is aimed at buyers seeking maximum comfort and space. This variant is particularly suited for chauffeur-driven experiences, enhancing the prestige of the XJ12 line.

The Jaguar XJ12 HE (High Efficiency) was introduced in 1981, featuring a revised 5.3L V12 engine with improved fuel efficiency and reduced emissions. It produces the same power output of 285 hp but focuses on a more environmentally friendly performance. This variant was part of Jaguar's effort to modernize its engine technology during the era.

The Jaguar XJ12C was introduced in 1979 as a two-door coupe version of the XJ12 series. It features a 5343cc V12 engine producing 288 bhp, paired with a 3-speed automatic transmission. This variant was known for its sleek design and luxurious interior. The XJ12C was primarily aimed at the performance market and offered a more sporting character compared to its sedan counterparts.

The Jaguar XJ12 Series 3 (UK Spec) was introduced in 1980 and remained in production until 1992. It features a 5343cc V12 engine with an output of 295 bhp, mated to a 3-speed automatic transmission. This variant was designed specifically for the UK market, emphasizing luxury and comfort with high-quality materials and advanced technology for its time.

The Jaguar XJ12 Series 3 (North American Spec) was introduced in 1980 and remained available until 1992. This variant features a 5343cc V12 engine, but power output was reduced to 280 bhp due to emissions regulations. It was equipped with additional safety features and luxury options catering to the North American market, making it a popular choice for affluent buyers.

The Jaguar XJ12 Long Wheelbase (Vanden Plas) variant was introduced in 1981 and continued until 1992. This model features an extended wheelbase for enhanced rear legroom and comfort. It retains the 5343cc V12 engine with 295 bhp. The Vanden Plas trim added luxury features, including premium leather upholstery and advanced sound systems, catering to executive and luxury car buyers.

The Jaguar XJ12 HE (High Efficiency) (European Spec) was introduced in 1981 as a more fuel-efficient variant of the XJ12. It features a 5343cc V12 engine producing 295 bhp, but with improved fuel economy and reduced emissions. This version included several technological advancements, such as redesigned cylinder heads, aimed at performance and efficiency without compromising luxury.