4G OnStar

With widespread expectations that we'll see a redesigned second-generation model unveiled early next year, the 2015 Chevy Volt was expected to be a carryover model with few changes. And so it is, with one important exception: Without any fanfare, its battery capacity rose to 17.1 kilowatt-hours for the 2015 Volt from 16.5 kWh in 2013 and 2014 models. Rated electric range remains the same, however, at 38 miles. DON'T MISS: 2016 Chevrolet Volt To Launch Next Year: What We Know So Far And the 2015 Volt's efficiency remains the same as well, at 98 MPGe. (A Mile Per Gallon Equivalent, or MPGe, is...