OK so lately I've been noticing my gas going pretty fast so has my brother and mom (I've been letting them drive my car) and my information center thing in the dash has been out.. Well anyway last night i replaced the bulbs in it and saw that it said I'm getting 11.6 MPG... That's terrible correct? my gf has a GTP also and she's getting 20 MPG and my cousins GTP gets 24 MPG.. I recently did a oil change and a spark plus change in the same night and still hasn't helped actually has been going down more.. any idea what could be causing this? I'm thinking plug wires and fuel filter next.. what else could help? cause that's pretty sh**y gas mileage.. Thanks guys