Despite its further horses, the hybrid is not any faster than the regular six-cylinder. However, the electrical part further smooths out auto stop-starts and makes things even quieter when working in EV mode. The xDrive45e plug-in hybrid opens at $64,695, however it's eligible for a federal tax credit score of $7,500, which might make it the least expensive mannequin. We advocate utilizing the xDrive45e as the starting point and adding more includes a la carte, until the extra efficiency of…