Well, the car only has roughly 31500 miles on it. I have always seen a 20-22 MPG average, with 300-330 miles on a single tank. I haven't changed any of my modifications, recently changed the oil, and changed the fuel filter somewhere in 25000-30000 miles. Recently moved to GA, and the speed limits are 30mph here and all really short trips, but I am now getting like 240 miles on a single tank and MPG of 11-14. I don't get it.

 

More stopping and starting like city driving?
..or bad gas try a different station.

 

Actually, not really that much stopping and starting. I use 93 octane too. Just kind of annoying. I'm wondering if I need to get a fuel system cleaning? I think I'm going home for Thanksgiving, so that's a 6 hour ride. I went the whole way on 1 tank before, so i'll see if it changes when I go back home.

 

Was it a drastic step change or gradual? Are your brakes dragging? Racing some of thoes good ol' boys?

 

I don't drive very far to work either but I get only about 240 per tank as well. I don't do a lot of highway driving. I know for me its the stop and goes that gets me. Let us know what you find out.

Oh yeah, and I run 87 octane.

 

I get about 16mpg here in dc. yeah, these cars suck for gas mileage unless your doing ALL of your driving on the highway. I have a 10mile commute and 4 miles of that is stop and go. stop and go sucks.

 

I get 280 miles per tank - 19mpg. I would guess I am 1/2 highway driving and 1/2 city driving. These cars really suck gas in city driving.

 

OK, I just don't get it; those of you that figure your fuel mileage by "the tank". These cars have 16 gallon tanks so if you're getting 280 miles/tank that's 17.5 MPG, not 19. How can you really know what your true mileage is (screw the f**king on-board, inaccurate piece-of-crap-for-a-computer) unless you hand calculate it from fill-up to fill-up? I've only been doing that for about 35 years so maybe I don't know what I'm talking about...

 

Step 1: Fill up with gas, letting the pump auto-shut off. Do not re-engage the pump to put more gas in.

Step 2: reset the odometer before you leave the pump

Step 3: Run the tank down as far as you can. The more you run it down, the more accurate this procedure will be (ie: running close to empty would be more accurate than only running down a couple gallons).

Step 4: repeat step 1 (ideally using the same pump at the same gas station) and write down how many gallons the pump says was put in. This is how many gallons you burned since leaving the pump the last time.

Step 4: Divide miles driven by gallons burned.

 

Call me stupid, but not everyone waits till it's on E to fill up