“The greatest enemy is aggressive acceleration and braking,” he said. Moderate drivers can save up to 37 percent of their fuel costs if they simply ease off the gas pedal, said Reed. Other tips to save on gas include clearing out the clutter in your trunk, and reducing your cruising speed to 65 miles per hour from 75 miles per hour would also mean gas savings of about 11 percent. “And you’ll save on speeding tickets too,” he quipped.