NEW YORK ( TheStreet ) -- Ford ( F ) fell Thursday after the U.S. automaker announced it would decrease the fuel economy ratings for six vehicles and make goodwill payments to owners of approximately 200,000 cars. The reduction covers all of the Ford's 2013 and 2014 hybrids and plug-in hybrids, along with the 2014 Ford Fiesta. The company said it noted the discrepancies through internal testing and notified the EPA, which then tested the vehicles to calculate the new ratings. In some instances, the reductions dropped the cars' combined fuel economy rating by up to 7 miles per gallon. Ford said it would make the goodwill payments to account for the difference between the previous and revised ratings. Must Read: Warren Buffett's 25 Favorite Stocks STOCKS TO BUY: TheStreet Quant Ratings has identified a handful of stocks that can potentially TRIPLE in the next 12 months. Learn more.