For the S Type Jag, 2000 and perhaps newer:
1. Engine temp sensor (tndency to read very high)
2. Premium AM, FM,Tape Player Radio: (AM radio has loud obnoxious clacking nose at either low or high end of dial, something to do with improperly shielded antenna)
3. Valve cover gaskets (prone to leaking oil onto spark plugs, rendering the auto unstartable)