We have had 570 for 18 months with very little riding. Trail riding in creeks and my 12 year old mudding after a snow. After replacing airbox and throttle that dealer said was saturated with mud, we now have to replace engine after it quit again. $3,000. I have read all over this forum that this is a problem with 2013 design. Poloaris won't speak to me, must go through dealer. Dealer just told us he wouldn't even call Polaris because engine was full of mud-said it must have been sunk and turned off while in mud which sucked the mud and water in. Even if we get it fixed, the same parts will go on there and it will happen again-or we can't ride like we want. It was never sunk in mud! Has anyone had any success with Polaris and this issue?