It is amazing to me that while the Japanese improved their reliability dramatically over a period of say a decade after they arrived in NA, the British continued to make garbage over a 60 year period.
Not that I don't love Jags, because I do. I worked in a Jag garage when I was 15 - 17 and the cars were phenomenal from a design point of view. However, now they are nothing special on that front and the reliability continues, as always, to lag badly.
GO ahead and buy a used, out of warranty, Jag if you are crazy or have just won the lottery and want to fill out that 6 car garage. Hopefully the other 5 cars are more reliable.
Great name, great history but why buy one? When someone tries to sell you tradition in a technical world, it's time to leave.
Cheers,
John M.