There's no doubt that the Bowers & Wilkins sound system is the tech highlight in the Jaguar XF, but the navigation system isn't too far behind it. The first thing we usually complain about when we come to the navigation system is the lack of full, seven digit postcode support. Thankfully, no such complaint can be made about the XF, since it has no problem accepting a full postcode, and can therefore get you to within metres of your intended destination, rather than just the general vicinity.
Jaguar has also had the good sense to employ a touch-screen interface, which makes the whole business of inputting destinations and navigating menus so much simpler. Yes, BMW's iDrive and Audi's MMI systems are tailored to their dial-based input methods, but they're simply no substitute for simply stabbing your finger at the option you want.
So, Jaguar has managed to address the two most important parts of the navigation equation, but it hasn't stopped there. Like other systems I've looked at, this one can also be configured to return three different routes for you to choose from, which is useful if you want to take the scenic route instead of sitting on a motorway.
The audible instructions are clear and timely enough to ensure that you're in the correct lane when you need to be. You also get visual cues in the central dash display, which again are clearer than most - the graphical representation of roundabouts is particularly good. Interestingly, unlike most in-dash displays, the XF doesn't constantly display the next instruction, instead it only does so when you're nearing your turning/exit/roundabout.