A class-action lawsuit was filed in the US District Court for the Eastern District of Michigan over the issue, which impacts about 168,000 of the 2016 model-year crossovers that have been purchased since last fall. Automotive News says the reimbursement plan will be publicly disclosed within a week. GM spokesman Daniel Flores, in an e-mail sent to Autoblog on Thursday, said the automaker is declining to comment. As a result of the mistake, the three models' miles per gallon figures were all overstated by one to two miles per gallon. GM previously categorized the mistake as "inadvertent."
A number of automakers have run afoul of regulators and the public for misstating fuel economy figures recently. In late 2014, Hyundai and Kia were hit with more than $300 million in federal penalties for allegedly overstating the fuel economy on about 1.2 million vehicles produced for the 2011-13 model years. Mitsubishi, Volkswagen, and others have had to address the issue of either overstating fuel economy or understating greenhouse-gas emissions.