 The national average for a gallon of regular bumped up two cents over the week to $3.52. Oregon's average ticked down two cents to $4.03. In Bend, the local average dropped a penny to $3.89. Dodd says a spike in demand over the long holiday weekend also doesn't seem to have had an impact. Demand is more than it was the previous week, but not what it was a few summers ago. She says overall gasoline demand remains low in the U.S., primarily because vehicles are getting more fuel-efficient.