We have a 2005 with just under 9,000 miles on it. Approx. 1 out of 5 times when you start the car it blows a lot of blue smoke out of the pipes. After it runs for 1 min or so, no more smoke. Never sounds like it's running ruff or missing. May not do this for a while then it does. Happened only when car had sat for a few days, but today we backed it out of the garage (didn't really warm up) no smoke, turned it off, then started it again awhile later it blew blue smoke. any ideas?? Is under extended warrenty still. Bought the car used in July '07, 3rd owner.