ust stay away from 2006 gs300/gs350 even 07 gs300. Some are fortunate enough not to have any problem, but majority have problem.
I don't know where you are but they don't make an 08 GS 300 in the states, it's a 350. From what I understand it's a bad engine design so I'm guessing no matter the year there's always the potential for the problem to arise. Or maybe it never will but why even take the chance/
All GS for North America are made in Japan...not sure anywhere else. The 3.0L V6 with DI has been a problem for Lexus. I can't speak for the UK version...but I suggest you do plenty of research in your market area to see if it exhibits the same problems.
http://www.clublexus.com/forums/gs-3rd- ... sfire.html