For years, Jaguar has had a poor reputation for mechanical quality. However, in my experience, that has not been the case. I bought my 1998 Jaguar XJ8 as-is for about $11,000 with 72K miles. So far I have not had unexpected mechanichal problems, just routine work. I really enjoy the vehicle. The rapid depreciation of these vehicles, in large part due to Jaguars mechanical problems of the past, makes them very affordable for your average person. Just a couple of suggestions: 1) Buy 1998 or after- thats when electrical system was replaced by Ford, 2) Make sure to get a pre-purchase inspection, and 3) if you need to buy parts, go on ebay, since the Jaguar dealer markup is huge.
1) Handles great for a full sized sedan, 2) Torque explodes at 4250 RPMs, 3) The styling is amazing, 4) interior is beautiful. Final comment- nobody can beat the styling and performance of a 1998-2003 XJ8!
Be aware that interior parts are not affixed well. They actually have a tendency to fall off, but are easy to fix. For example, expect problems with your cup holder. I have seen this problem in many jags. Also, my CD player stopped working but it could just be a loose wire and can check the manual.