This wagon version of the previous-generation Prius offers a very roomy rear seat and a generous cargo area. It's about the size of the Ford C-Max, its main competitor. Despite its extra weight and a less aerodynamic shape, the V still got an excellent 41 mpg overall in our tests. The electric motor and engine have to work fairly hard, especially when the car is loaded with cargo. The ride is comfortable, but uneven pavement can cause an annoying side-to-side rocking. Handling is sound and secure but hardly inspiring. Rear visibility is better than in the standard Prius. A larger 4.1-inch dash-top screen for trip computer functions is also new.