The greatest thing you can do is to give it a full tune up. that consists of new plugs and wires. cap and rotor. air filter as well then change the oil and filter in both the engine and trans mission, make sure your tires are properly inflated as well. these changes should help the performance of the car. if you still feel that the milage is poor than i would suggest that you have the carburator adjusted and check the timing to insure that it's where it should be. hope this helps ....please rate this