My car is getting very poor gas mileage, about 10 mpg.
What could be causing this?
I have had it serviced at a few places, but there has been no resolution for this issue.
Is your check engine light on? You can get the codes pulled at just about any local auto parts store for free. The codes will give you a good indication on where to start with the issue. Post them below for more information on each code. A faulty engine sensor can have a drastic affect on fuel mileage.
According to fueleconomy.gov the in city fuel mileage on this vehicle is normally around 20 mpg. If you are letting the car warm up before driving it will decrease. Low tire pressure will also decrease fuel mileage. A clogged air filter or dragging brake caliper will also decrease fuel mileage.