I just purchased a 2004 Mazda 6s. I am guessing this is the speed model?? It has the 3.0 liter V6 engine. I have gone about 85 miles so far on the tank of gas and the needle is hovering a little above the half way mark. Is there a point at which the needle stay still for a long time or am I just getting awful gas miledge. I have been driving it to school in traffic alot but i hope it doesn't affect the gas miledge this much. Thanks for everyone's help.