The Vanden Plas fits between the two XJ8s and the two Super V-8s, with respect to both price and features. Vanden Plas focuses on creating the most authentic British luxury environment, with added features like lambs wool carpeting, a higher-powered audio system, a navigation system, and the classy rear seat fold-down picnic tables.

The Vanden Plas uses the longer wheelbase foundation (125 inches) bringing the overall length to over seventeen feet.

The XJ Vanden Plas has the same engine as the two  XJ8 models, but output has been increased slightly for 2006.  A 4.2 liter aluminum block DOHC V-8 generates 300 horsepower and 310 pound-feet of torque, and is paired with a six speed automatic transmission.  Even the larger Vaden Plas reaches 60 mph in 6.3 seconds.