How did he find jag dealer response? They are meant to be the best around.

Here's hoping it's less faulty than the XF. My dad is on his second XF now, and is absolutely adamant that it is going before the warranty runs out.

Problems have included :

brake sensor faults putting the car into limp mode (twice), gearbox going into limp mode (3 times), car failing to start (3 times), engine failing to stop (car was stopped, but engine would not shut down, twice).

He's not having another one, lets put it that way.

Sorry to hear your dad had so many problems with his XF - when I had mine it ran it up to over 75k miles without a single fault in all that time. Best car I've ever owned by a long way.