The 2017 Toyota Prius Prime plug-in hybrid variant was coined as the most energy-efficient vehicle in the United States, which was previously held by the BMW i3 in 2014. However, it looks like there is a new contender for this title.

The latest Hyundai Ioniq Electric astonishes with its EPA-rated range of 124-miles and its EPA rating of 136 MPGe combined. These numbers are higher than the Prius Prime’s 133 MPGe on its electric mode.

Ahn Byung-ki, director of Hyundai’s eco-vehicle performance, said that the company feel the Ioniq’s 124-mile range is adequate for now but it will bound to be extended in the future.

At a recent media event at Hyundai’s Michigan technical center, Ahn clarified that there would be a 200-mile version of the Ioniq Electric in 2018. However, Ahn did not mention how they would be extending its range; they could replace the current battery with a larger pack but that just doesn’t seem all that feasible.

This is because Hyundai usually positions the battery under the rear seat and in between the rear wheels which leaves very little storage. But the automaker could consider protracting the battery pack into the central tunnel.

The 124-mile Ioniq Electric and the Ioniq Hybrid model would soon be arriving to dealerships around you prior to the start of 2017.