This is a very confusing issue I got ya'll. I hope I can explain it right. Its a 99 convertible sebring w the 2.5 ltr v6. Has 122K miles. Car is clean and very nice. Has new timing belt, valve cover gaskets, rack n pinion, plugs, wires, and other things have just recently been done to it. But, I have the cmtc trip info computer in the dash. Its a JXi. Lately i have noticed that when the cmtc says theres say, 50 miles left, after I go about 12 miles it says theres 21 miles or so left. The readings are probably correct because i can almost see the gas needle moving when im driving. I know, when its cold you get worse mpg, tire pressure can cause worse mpg, weight in the trunk/car causes worse mpg, when you speed to and from red lights and gas with ethanol gets worse mpg but this isnt those things that cause a couple miles per gallon here and a couple there. Im not driving fast, with anything at all in the car, no cold weather here in June in SC, tire pressure is perfect. In other words ive already tried everything I could think of but this car is getting a third of what its supposed to or should get. If i watch the cmtc it drops 2 and 3 miles at a time each time it drops after a mile or so. When you go a mile it should drop a mile in the range info but after a mile it drops 2 and 3 even at a time. Crazy! Like 20 bucks of gas only gets me 6 gallons of gas down here and those 6 gallons are only getting me like 50 miles or so. Somethings WRONG. And its not leaking gas anywhere either. Anybody have a clue whats going on or what I may need to do or check? THANK YOU FOR ANYTHING you can tell me! Marc C. (its the same car im having the a/c issues with right now) Thanks again!