Poor gas mileage on my 2005 kia spectra ...why?

fuel mileage has many variables. driver habits are at the top.
making sure all services are done according to manufactures recommendations are important.
air filter, fuel filters need to be changed regularly.
plugs, wires, coils serviced and in good operating order.

all these make sure your car works to peak performance and gives you the best mileage.

Roy

Thank you.. Maybe air filter -Give that a try. Car idles and runs well.. Air tire pressure ok--A lot of stop and go driving may be my problem hey.

good luck

Roy