Ford says the Focus Electric is the most fuel efficient five-passenger car in America with up to 105 mpg-e. Its 23 kWh lithium ion battery is good for 76 miles (100 miles if you're easy on the accelerator) and can fully charge in 4 hours using a 240-volt charging station. To help you monitor the Focus' battery, Ford offers the MyFord Mobile app, from which you can schedule charging times based on electricity rates, find the closest charging stations and reserve a charging spot. The MyFord Touch telematics system and SmartGuage with EcoGuide provide you with constant updates on your Focus' battery life and even help teach you how to squeeze the most out of every charge.