Hyundai Accent, Veloster and Elantra and Kia Soul. Before the admission a lawsuit had been filed by an entity called Consumer Watchdog, afterward there were "approximately 53" lawsuits filed in federal court that were eventually consolidated into one case in a California Central District court.
The companies apologized profusely and gave customers prepaid gas cards that they could refill with funds for as long as they own their vehicle, as well as perks like free car washes and routine maintenance services.
The company has just announced that it has reached a preliminary settlement of the case by adding another method of reimbursement, a lump sum payment that would free drivers from having to go back to the dealership to have their mileage verified for debit card refills.
for the whole story http://www.autoblog.com/2013/12/25/hyundai-fuel-economy-litigation/