The EPA gives the 2013 Ford C-Max Hybrid a 47-mpg rating on all three of its measurements: city, highway, and combined gas mileage. That combined figure is just 3 mpg lower than the smaller Prius Liftback, and 5 mpg higher than the Prius wagon.
In a mix of city stop-and-go and freeway driving, we saw figures of 37 mpg over a total distance of about 50 miles, including quite a lot of energetic mountain driving. On a shorter and more urban 20-mile route, we logged 44 mpg.
Ford proudly promotes the C-Max Hybrid as having a total range of 570 miles, higher than that of any Prius at the EPA-rated mileage. We think any family using the C-Max is likely to require rest stops well before achieving that distance, but reducing gasoline stops is always a good thing.
UPDATE: While the 2013 Ford C-Max Hybrid was originally rated at 47 mpg combined (47 mpg city, 47 mpg highway), Ford was forced in August 2013 to lower its ratings to 43 mpg combined (45 mpg city, 40 mpg highway). The reduction came after Ford admitted that it had used the gas-mileage figures for the 2013 Fusion Hybrid sedan, which fell into the same weight class and used an identical powertrain. That practice was entirely legal under EPA rules, but after widespread buyer complaints and an investigation by the EPA into its real-world fuel economy, the company agreed to lower the ratings.
Then, in June 2014 Ford again lowered the ratings--this time to 40 mpg combined (42 mpg city, 37 mpg highway) after discovering errors in lab-test measurements and calculations for aerodynamic drag. Ford agreed with the EPA to reduce the ratings a second time, and send a check for the increased gasoline costs to all owners of 2013 C-Max Hybrids, along with five other cars whose ratings were reduced at the same time. While 40 mpg is still higher than the majority of cars on the market, it is a lower rating than the larger (if less powerful) Toyota Prius V wagon.