2004 Jaguar X-Type 3.0 4dr AWD Sedan (3.0L 6cyl 5A)
I bought my X-Type new in 2004 and still have it.
After over 90K miles there are only two problems - the interior cloth material falling away from the front and read roof posts (like several others have mentioned) and the headlight assembly breaking due to what I guess is the front end stiffness.
My dealer in New Orleans has been terrific and fixed the interior cloth issue for free.
The headlight repair estimate was quit expensive so I've opted to operate the car with less than perfectly aligned headlights.
Overall the car has been one the best cars I've owned in 41 years of driving.
Performance, reliability, interior comfort/quiet and appearance after 6 years.
More rear leg room would be nice and a less stiff front end.