Software Update Gas mileage
So I got the new software update a few weeks ago and my gas mileage has gone down CONSIDERABLY. I went from averaging 18mpg in spirited city driving to 14-15 mpg driving like a grandma (because I'm trying to conserve to improve my mileage). Has this happened to anyone else? Should I bring it into the dealer? I'm sorry but 15 mpg when I never go WOT is crazy to me!