There was a recall on the cylinder heads, requiring an engine rebuild.
There were constant problems with the 8-speed auto.
The factory Nav is clunky.
It is difficult to be comfortable on long car trips.
An a laundry list of other problems.
The LS430 was a great car. The 460 is a major let down.
If you are buying new, do yourself a favor and get a BMW 7-series.