A British team has crossed North America from New York to Los Angeles in a Jaguar XF 2.2 Diesel averaging an incredible 4.49 litres/100 km over 4,480 kms - making it the most efficient Jaguar ever built.
Finishing in Los Angeles, California, the journey - the equivalent of travelling from London to the Sahara - took in 11 states, three time zones and eight days. Yet the XF only required four stops for fuel - its peak economy of 4.21L/100 km being achieved on the penultimate day of the trip.
Paul Alcock, XF project manager, Jaguar Cars, who was present throughout the journey, commented: “This project was designed primarily to test the potential economy of the XF 2.2D. 
“The incredible figures achieved by the car were accomplished through making every element of the new XF as efficient as possible - from its aerodynamics to its four-cylinder 2.2-litre diesel engine linked to an eight-speed gearbox. 
“The whole XF team is incredibly proud of what’s been achieved and it is a graphic demonstration of the strength, engineering integrity and efficiency of the car.”
Driven by independent testers David and Alexander Madgwick, the XF 2.2D was a scrupulously standard UK registered right-hand drive vehicle. In the course of the coast-to-coast adventure, the car maintained an average speed of 85.2 km/h incorporating a multitude of real-life scenarios including the busy roads exiting New York and, towards the end of the trip, entering Los Angeles, road works, high winds and a climb to 2217 metres above sea level.
Despite such efficiency, the XF 2.2D maintains the levels of performance and efficiency expected of a Jaguar. Capable of seating five adults in comfort, it’s equipped with leather trim as standard as well as a touchscreen display and climate control. 
The XF is capable of accelerating from rest to 100km/h in 8.4-seconds before reaching a top speed of 225 km/h.
The XF 2.2 Diesel, along with other  2012 Jaguar models will be launched in  New Zealand early in the New Year.