I've gone close to 35 miles with the fuel light on, but that was when I knew there were multiple gas stations for me to stop at. Normally I don't let it get too far below half tank before I fill up.

Back to the topic of the thread... How many miles are you guys getting per tank of gas. When I let it run down (35 miles after the fuel light came on), I had 387.7 miles on the tank. I filled up with 15.633 gallons for a mostly highway (some back country) mileage of 24.8 mpg. I have been averaging 24-25 mpg on my longer commutes and only as far down as 21 mpg on around town and back road type stuff.

I didn't figure that was too bad considering my old Intrepid would get at best ~21 mpg on the same trips and I am alittle more 'spirited' with the bonnie.

Don't forget they change the fuel formulation to the winter mix around Oct 1st.
This usually lowers mileage in the Northeast.
Everyone I talk to gets worse mileage this time of year.

Not sure what they would add to the fuel for the winter but I think the main cause of poor fuel economy in the winter is letting the car idle / warm up for 10 min each time you go somewhere

I do not believe they add anything to the fuel? Its already not gonna freeze. But I think it really depends on how well you car is taken car of, and the kind of mods you have. For instance, a smaller pulley will decrease your MPG, while a CAI would increase it somewhat. Rockers and cams mostly increase it, as well as more open exhausts.

They add something for emissions or for easier starting or something. I DO know they put something in there though. My driving habits haven't changed at all and since before october and now after october, my MPG have gone down about 3 MPG... same with the bonneville.

When the light comes on if you switch the DIC to miles to empty you can run it down to 50 miles then it just says low fuel.

Funny thing about mileage on my Bonne...................and I pretty much have an egg-shell foot.....

1. Typical around-town and 60 mile round-trip highway = about 23.5-24.5 mpg., BUT AC OFF!
2. AC eats the crap out of my mileage. I notice a drop of 3mpg at 70mph, steady-state, flat road. W/O AC = 28-30mpg. With AC = 25-27. Ambiend temperature about 75 degrees F.

I have never had a vehicle where cutting the AC on had such a major impact on MPG.
Yes the AC system is working properly and is not overcharged. May be an anomoly because of the gearing and strong AC compressor.

...and that has to do with mpg ..what?

I was just responding to PontiacDads question on the fuel light, if you read the whole thread.