Roy Glease

I’ve always been a jag admirer but I’m not a Jag owner, yet. I’m now into looking at the XF. Questions 1: Is it worth paying the extra for a a 2nd Gen (I believe 2015 - 2: If so, I have to have an auto and prefer diesel so what is the preferred engines and most reliable and economical? 3: Is the Sport model a better advantage? 4: Any pitfalls I need to be wary of? Thank you for any advice as this is a genuine enquiry into my very late (nearly 79) in life dream.