The conditions that led to gas prices going up have gotten better over the past two weeks. Do not purchase mid-grade or premium gasoline unless it is recommended by the vehicle's manufacturer. High-octane, premium fuels are generally used in high performance engines. Use cruise control. Maintaining a steady speed gives you the best fuel economy.
Higher speeds require more gasoline.
The more you accelerate and decelerate, the more fuel you'll burn. Plan meal stops during congested times. Don't let your engine sit idle. Avoid two-lane or winding roads unless you're on a scenic road trip. If you're at a store, turn your engine off.