MPGomatic.com puts a 2013 Ford C-Max Hybrid to a grueling 900+ mile test drive. [ Full Review: www.mpgomatic.com ] This extended review dives into the how-tos of fuel economy with the C-Max's SmartGauge modes (Empower, Inform, Engage) with a focus on batter regeneration (or regen). This test drive took place in late fall, with temperatures in the twenties through low fifties. Cold weather has a significant negative effect on gas mileage and this is exponentially true with hybrids. My iMac takes a beating when producing these long-form real-world high-definition (HD) car reviews. They take hours upon hours to export and upload ... but it's worth it.