[husker boxster]

This is my experience...

I've used ethanol in new cars and have not had any issues. Where I've run into problems is using ethanol in used vehicles - clogged fuel filters, etc. I think running ethanol in an older vehicle when regular gasoline was previously used results in the ethanol cleaning out the gunk at the bottom of your tank. Said gunk starts flowing through your fuel system and depending on the size may clog the system somewhere along the line. Since new cars have a gunk free gas tank, ethanol works fine.