Last week, Consumer Reports found that gas consumption for Ford’s C-Max hybrid and Fusion Hybrid fell significantly below estimates listed by the Environmental Protection Agency (EPA). Responding to the consumer testing organization’s findings on Saturday, the EPA said it would review the fuel efficiency ratings for the two vehicles, the Detroit News noted.
Under testing by Consumer Reports, the Fusion hybrid scored 39 mpg in overall driving, even though it received an EPA rating of 47 mpg. Similarly, the C-Max was rated at an overall 37 mpg, though the EPA had certified it at 47 mpg.
Fuel economy tests are conducted by auto manufacturers and reviewed by the EPA. Vehicle performance is often as much as 20% less than EPA ratings under street driving conditions. The agency has noted that hybrids show greater variability in fuel consumption performance.
Last month, the entire 2013 Fusion line was named the Green Car of the Year by Green Car Journal.
Shares of Ford rose fractionally in Tuesday morning trading.