The U.S. Environmental Protection Agency recently disclosed its estimated annual fuel cost list for light vehicles in the country. These figures are derived from an average mileage driven of 15,000 miles, 55 percent in city driving and 45 percent highway driving, as reported by InsideEVs.

Not surprisingly, all-electric and plug-in hybrids have lower transportation costs, coming down to just a couple hundred dollars in some instances.

However, the Hyundai Ioniq Electric topped the list with the lowest annual energy cost, at only $500 per year. This is a good figure for 15,000 miles of travel.

The gap between the Ioniq and the priciest models are wide; the standard SUVs cost up to $3,850 to fuel up over a year. This difference could grow drastically as gas prices are slated to go up by the end of this year.

Seeing that the Hyundai Ioniq Electric leads with the lowest annual cost among 2017 models, how much can its rival, the Toyota Prius, save?