very poor gas milage waht can i do to improve it?

[D_roc]

I calculated and i'm getting somewhere between 16-18MPG, and i put fuel injector cleaner a week ago, the air filter is goo a new fram change it like a month ago and i do the oil changes on time, what else can i do to improve and won't cost a lot. the spark plugs need to be changed so wil that do any good, and also i only pump premium gasthanksD
Modified by D_roc at 7:50 PM 2/22/2008

[Ryan Heo]

I got 12~13 mpg on premium gas. New O2 sensors, knock sensor, filters, spark plugs, rear header, and wheel alignment... There is no hope

[Darktide]

fuel filter, spark plugs, double check your tire pressure, other than that there really isn't anything else you can do. O2 sensors are another big one to do but they aren't normally cheap. I get 22-24 mixed driving (highway&city). It's rough to put a finger on exactly what causes poor gas mileage, there are so many things that will cause it because parts are slowly wearing down. Good luckJay