WASHINGTON (Bloomberg) -- The fuel economy of vehicles sold in the United States last year had the sharpest gains in almost four decades, with Honda Motor Co. Ltd., Volkswagen AG and Mazda Motor Corp. producing the most efficient fleets.
WASHINGTON (Bloomberg) -- The fuel economy of vehicles sold in the United States last year had the sharpest gains in almost four decades, with Honda Motor Co. Ltd., Volkswagen AG and Mazda Motor Corp. producing the most efficient fleets.