hypermiling

noun

1. (uncountable)Driving a motor vehicle slowly so as to maximize fuel efficiency.

   “Hypermiling, the art of driving your car so it delivers better fuel economy than the manufacturer's official figures, began in the US as a wacky journey taken by obsessives such as Wayne Gerdes, who coined the phrase and has averaged more than 180mpg in a hybrid Honda Insight.”

   “Yahya Fahimuddin got tired of spending $60 to fill his Jeep, so he bought an old Honda Insight hybrid and took up hypermiling”

   “For example, in the U.K., where a gallon of gasoline currently costs around $5.60, hypermiling could save the average driver doing 8,000 miles in a 33 mpg car around $500 a year, according to Gerdes.”