 The xDrive40e is the best overall luxury SUV on the market. Once you take it for a test drive you will understand. You have a Twin Turbo 4-Cylinder engine and a 20 Mile Hybrid motor that gives a you virtually gas free driving around town. On long trips, you can maximize the Hybrid motor by Coasting and Breaking to recharge the engine to guarantee less fuel usage. Overall performance is fantastic. Though the heaviest of the X5 line you do not see any lag from stop to start with the engine combination. Gas mileage I have experienced in the city with combined driving is 58 mpg and on long trips of 150 miles plus I average 29 mpg. The ride is extremely smooth and I catch myself going a little fast. The heads-up display keep me in check while driving. The interior is beautiful depending on the options you select. I have the Black Dakota Leather and it is beautiful. Seat comfort is fantastic as you have an array of adjustment options for comfort. Navigation is great. The 10 inch plus display makes things very easy to use. The infotainment system is easy to use and navigate thru while driving. The exterior is beautiful. Dual exhaust and the traditional BMW kidney grill topped off with the high quality paint options makes the X5 a no brainier for someone looking for a new SUV. Many people complain about the xDrive40e not having a 3rd row seat. But honestly, unless your putting two or three midgets in the back, a 3rd row makes no sense. All and all, the 40e is an amazing SUV. I drove the Mercedes GLE and compared the two detail to detail. If your over 60 and looking for a grocery getter, get the Benz. If your looking for Performance AND quality, get the BMW. One side note, iOS compatibility is POOR due to Apple limiting the iPhone. Very tough to get Text Messages and Emails on the infotainment with an Apple device.