A few things you can do. Before ordering, avoid options that add weight (AWD, moonroof, bigger wheels). If you live in a hot climite, order a light color.
Inflate the tires 5 psi over recommended provided you don't go over the max pressure on the sidewall.
Do a complete changeover to synthetic lubricants including engine, power steering, transaxle and rear differential on the AWD models.
Take a look at doing a CAI and a chip. The chip manufacturers can do either performance or economy tunes for anywhere from 87 to 93 octane.