Spyderman01
New member
I have an 2009 RS manual with 5400 miles on it and was generally averaging 30mpg on 87 octane gas. About a thousand miles ago my mileage suddenly jumped to 35mpg with absolutely no changes and sometimes I get upwards of 38mpg, I havent changed my driving style or anything else. Here in WI the politicians mix alot of crap in our gas to cut down on emissions which doesnt work but makes them feel better about themselves, but I wonder if they changed something in the fuel, who has the answer?