Poor Fuel Economy: Preliminary
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Malibu, and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
Observe the owners driving habits. Is the A/C ON full time, defroster mode ON? Are tires at correct pressure? Are tires and wheels the correct size? Are excessively heavy loads being carried? Is acceleration too much, too often?