The XJ8 L is essentially the same sedan as the entry level XJ8, but the wheelbase has been pulled from 119.4 to 124.4 inches.  This model also offers proportional increases in rear leg room and overall length.  Jaguar puts a $3500 price tag on those additional five inches.  Both XJ8s receive upgraded leather seating for 2007, and Bluetooth is now a standard feature across the board.
The two XJ8s and the Vanden Plas all share the same naturally aspirated power plant.   The 4.2 liter aluminum block V-8 produces 300 horsepower and 310 pound-feet of torque.  Jaguar offers exceptional fuel economy for such a potent V-8, largely due to its variable cam phasing system.  The British automaker estimates 18/27 mpg for the three non-supercharged models.  Both engines are paired with a six speed automatic transmission.
Although there is a noticeable jump in price for this model, the list of features is the same.  Amenities include leather seating, walnut trim, rear park control, Bluetooth, a premium CD audio system, a moon roof, and all power options.  The full size sedan is also fitted with 18-inch wheels, Jaguar's "CATS" adaptive suspension, and xenon headlights.