my name is Ray, and like many of you am brought here by a question I have regarding (my girlfriends) 2006 Aveo HB. I am excited to learn as much about them from y'all and eventually use my background knowledge to assist where I can. I attended Lincoln Tech in 1976 and have owned and worked on quite a few GM products including a '71 Nova, 70' Monte Carlo, '74 Pont Grand Prix, '94 Suburban 1500 4wd and a '57 Nomad. As you can see I am kind of new to the "Econo Cruiser" line and am specifically looking into poor MPG. My girlfriend was told to expect 35-40 MPG but we are more like in the mid to upper 20's. So far I have seen recommendations to change spark plugs since there was apparently an issue with the factory's robots being a little over zealous and cracking them during install. Anyways, Hello everyone!