Hyundai has long been in the top spots of America’s most fuel miserly vehicles. Over night, Hyundai will drop a few rungs down. Audited and found wrong by the EPA, Hyundai and Kia agreed to restate the fuel economy ratings on many of its cars. Cars in showrooms will be relabeled. Customers of more than a million 2011 through 2013 vehicles in the U.S. and Canada will receive debit cards.

Most labels see a reduction by one to two miles per gallon. The Kia Soul receives a a six mpg highway reduction. The 2012 Hyundai/Kia fleet fuel economy level will drop from 27 to 26 MPG, the company says.

With the debit cards, customers will be reimbursed for the difference between the overstated and the restated fuel economy rating, based on the fuel price in their area and their miles driven. An extra 15 percent will be added for the inconvenience. Current owners will be able to refresh their debit card for as long as they own the vehicle. Prior owners of affected vehicles who have already sold their cars will also be reimbursed using the same formula.

“Given the importance of fuel efficiency to all of us, we’re extremely sorry about these errors,” said John Krafcik, CEO of Hyundai Motor America. “When we say to Hyundai owners, ‘We’ve got your back,’ that’s an assurance we don’t take lightly.”