I've been advised both engine mounts require changing due to visible fluid leaks. Recently i could feel a slight tremor feeding into the cabin at idle, something the BMW specialist who changed by transmission fluid also picked up on.
I've been quoted £500 to change both by a Jag specialist - does this sound realistic using OEM parts and are there any other items to be address as a 'whilst you're in there'?
Obviously, parts cost, labour and VAT can quickly hit £500. Best to find out parts cost and go from there. Lets face it, you are unlikely to get a pair of new hydraulic engine mounts for less than £250. With labour often at £100+ per hour plus VAT, you could easily hit that £500 figure.
Remember you have a car which originally cost around £55K. Expensive cars cost expensive money when parts need replacement. Having a professional garage do work for you is going to have your costs kept high. DIY repairs are a different matter.
A very rare job. I`ve not heard of anyone yet who has had to change engine mounts. Best to ensure the need is real before forking out for new parts....first you have to get the under tray off. The fixings can be a nightmare due to corrosion. Best of luck!!!!!
I think I read, some time ago, that the fancy piezo-electric engine mounts used on the standard X350 (diesel in my case) were no longer available. Yours seem to be hydraulic - I wonder if they're a potential replacement for the piezo- ones; probably not, as I assume there's some pump and control valve setup to operate them (or are they just fluid-filled)?
1981 XJ6 Series III basket case
1991 XJS V12 "facelift"
2008 XJ TDVi