really poor gas milage just passed smog seems to be running well just really bad milage 5 speed

just passed smog and seems to be running well it has a 1.8 4 cly-5speed

Welcome to AF.

Have you preformed basic maintainence? Change oil, air filter, plugs, wires, o2 sensors if they have never been changed? All of these things can leed to bad gas milage

Make sure your tires are inflated to spec.