How are you guys doing? I got 13.6 this past week, there must be something wrong because I believe I had gotten 20 at one point? IS the gas getting thinner?
Did your local area switch to ethanol, by chance? Ethanol blend fuels tend to get crappy gas mileage. My cars' mileage always takes at least a 3-4 MPG dip for 6 months outta the year when they use ethanol from October to May, then it comes back up when they go back to MTBE blend for the summer months.
Otherwise, I'd say something is amiss in your system - oxygen sensor, perhaps.
I know I need an oil change, but I think we have ethanol 5 or 10% all year. Maybe I drove a little harder...I might be trading in the stang for a bike :-/
i changed the o2's and saw a 3-4 mpg jump in my mpg's. if for some reason yours has taken a dump then somethings wrong. fuel filter, plugs, cap and rotor, o2's and oil change. if its the o2's then you might be able to get a code from the 'puter. if you dont have a scanner then maybe like autozone or another parts store will scan it for you.
Half a tank of gas consumed on a 92 mile drive this weekend! Probably another 1/8 of a tank at the track, and I decided to stop to refill on the 92 miles back home since I wasn't sure I was going to make it...