The 200bhp 2.0-litre mild-hybrid diesel will likely be the most popular choice for long-distance drivers, claiming to return 50.7mpg alongside an acceptable 0-62mph time of 7.3sec.
In reality, however, the car feels slightly more languid than the numbers would suggest, because the eight-speed automatic gearbox can seem to hunt around for the next ratio at higher speeds, or not swap cogs when you want it to. While this can be frustrating, it does at least change gears imperceptibly at town speeds.
The engine itself provides a good amount of pulling power (310 lb ft), and the mild-hybrid technology has made a tangible difference to how strong it feels on the road.
What's more, it's an extremely quiet and refined unit, Jaguar having fitted it with an active noise cancellation system. When its start/stop system is in operation, for example, you barely notice the engine cutting out or restarting.
Notably, the diesel is good for a towing capacity of 2000kg, which is the same as the equivalent A6 Avant TDI but 100kg less than the E220d Estate.
If you want a faster response and more straight-line performance, you should look in the direction of the 2.0-litre petrol engines. Even the standard P250, with 247bhp and 269lb ft, manages 0-62mph sprint in 6.5sec and a top speed of 155mph. In its most powerful guise, P300, its 296bhp output helps to cut the 0-62mph time by 0.4sec, but top speed remains the same.