XF weak points?

A friend is looking at picking up a 2011 or 2012 XF with the 5-liter engine. I drive XJs (06 VDp, ‘97 LWB and ‘89 XJ6). I know nothing about the XF line or that engine. Can someone give me a rundown of the known weak points on this car? Thanks in advance, and I am happy to take messages into my email at eliotb@cox.net.