Big drop in 2005 gas mileage??

a couple of possibilities
1) air filter plugged
2) a change of gas stations to one pumping E10 or E20
3) change of route that has more hills or construction or any thing to slow your average speed down
4) more use of A/C like a lowered temp setting
just some things to look at

Edit: when you check the air filter you want to take it out and look at the bottom as that is the side that gets dirty.

 

Number one way to tell if something is wrong with your car is if the gas mileage has dropped. You should not be getting 30-35 unless you... well... I cant think of anything that would cause your mileage to be that low. Unless all of your trips are 1-2 miles long. Even when I am in heavy stop and go traffic I get 45-50 mpg.

Couple other items not on Franks list could be the coolant thermostat, or bad spark plugs.

Tell us a little more about your driving. What mileage do you get when you are out on the freeway, with the car warmed up cruising at 60mph with the cruise control? You should see around 50-55mpg in that scenario. Have you done any mileage tests in specific conditions?

 

Hi CT. I have the same problem with my 2005. Overall average since purchase is 48 mpg. Now getting high 30's. I know it's winter but I've gone through 5 previous winters WITHOUT this problem. My biggest concern is ethanol. Ohio now let's stations add up to 10% without any notice. A phone call to a UDF manager should know said all brands were now 10%. There are different state rules regarding posting, e.g Florida requires posting ANY ethanol on the pump. Michigan is same as Ohio. Google topic to find your state. This could very well be a new "TAX" courtesy of the liberals. Regards, John