Hyundai and Kia recently acknowledged to the EPA that some of their 2011 to 2013 model year cars have inaccurate fuel economy rating labels.

Now the automakers are named in a lawsuit filed November 4 in U.S. District Court in Ohio as a result of the mislabeling.

According to Automotive News the suit seeks unspecified damages – as well as class-action status – for U.S. consumers who purchased or leased any of the eight Hyundai and five Kia models listed in the action.

The suit also asks the court to permit Ohio consumers who bought Hyundai or Kia vehicles with misstated mileage labels to back out of their purchase or lease agreements.

The legal action was brought by Molly Simons, who purchased a 2012 Kia Rio this past spring; and Rebecca Sanders and Jeffrey Millar, who purchased a 2013 Hyundai Elantra last month.

Last Friday, Hyundai and Kia said mileage ratings would be readjusted for the approximately 900,000 cars affected in the U.S., and for the 172,000 Canadian models involved.

An EPA inquiry was prompted by consumer complaints that actual miles-per-gallon performance from 2012 Hyundai Elantra models weren’t meeting those mpg ratings listed on window stickers.

The Korean automakers are blaming the incorrect fuel economy labels on procedural errors during testing.

Kia and Hyundai said customers would receive compensation based on vehicle mileage, the length of time the vehicle has been owned, as well as the local price of gas. Reimbursements will be ongoing as long as vehicles involved in the process are in the hands of the original owner.

To see which vehicles are involved and to obtain information on reimbursement, U.S. customers can visit www.HyundaiMPGinfo.com and www.KiaMPGinfo.com; Canadian customers can visit www.HyundaiFuelConsumption.ca, and www.KiaFuelConsumption.ca.

Automotive News reports that in July this year a consumer group sued Hyundai in California over fuel economy claims. This Calif. suit, like the Ohio matter, also requests the court grant class-action status, unspecified damages, and that Hyundai be prevented from advertising mpg numbers without government-mandated disclosures for 2012 Elantras.

Automotive News