I own the Jag XK8 with ford 4.2L engine 295HP 2004. Bought it with 50,000 miles has 53,000 now. Mine is a ware coupe.

So far I have only changed all the fluids. It has a 6 speed ZF trans I change to the Ford fluid for a 6 Speed ZF as it is $7.50 a quart

Jag ATF is $30.00 a quart. I had one coolant leak near the intake manifold. Plus I replaced on head lamp lense for about $325.00

parts only. So far pretty cheap to own. Lots easier to get in and out of compared to a Corvette.