charles 
2016 BMW X5 SUV xDrive35i 4dr SUV AWD (3.0L 6cyl Turbo 8A)
Horrible Gas Mileage- dont believe the  stats from
 I have had the BMW X5 for 7 months.  It rides comfortably.  The voice commands are still iffy and make mistakes.  I speak clearly with no accent and it still makes mistakes, especially on navigating and pulling up your phone contact list.  I drive 50% in traffic in Atlanta and 50% highway driving on GA 400.  The gas mileage on highway never gets above 18 to 19mpg.  The gas mileage in traffic gets 15 to 17mpg.  The average per the computer is 17.3 after 6 months.  I took the car in and the technicians said this is normal and there are no settings to improve the gas mileage other than using eco-boost.  I frequently use the eco-boost mode and it makes about .2mpg difference.  Very little. I am light on the throttle and brakes about 80% of the time, so I don't think that's a big factor. The technician said the advertised mpg from BMW is shown under ideal conditions on a track and going 55 miles per hour.  I wish BMW disclosed this when I first purchased the car. I end up filling my car twice a week now.  My wife's Lexus RX 350 is a comparable SUV and gets about 24 miles per gallon, with similar driving habits and good acceleration.  Its a much better deal.  Corvette gets better gas mileage which is pretty sad.  The only thing I like better about the BMW X5 over the Lexus RX350 is the entertainment system.  Much more intuitive and easier to use in BMW.  If that's not as important to you, then, save some money and get the Lexus.