Last year in New York, BMW teased a concept of their X5 sport activity vehicle operating on a plug-in hybrid powertrain. Combining the 2.0-liter four-cylinder engine using BMW TwinPower Turbo technology combined with an electric motor, the X5 eDrive Concept was one of many interesting ways to envision BMW's top crossover vehicle. Recently, a diesel-powered version of the BMW X5 was imported into North America allowing owners to explore greater distances between fuel stops. Less than a year since the X5 eDrive Concept debuted, the vehicle has been granted the production green light as the 2016 BMW X5 xDrive40e. Employing a similar powertrain layout displayed on the concept, the 2016 model year X5 xDrive40e operates primarily on an electric power before relying on a gasoline engine for longer range driving. From concept to production, the BMW plug-in hybrid vehicle has undergone some gains as well as some loses. The one gain made with the showroom-ready version of the ele...