Hi All, I Own the BMW X5 E53 3.0i which i got with 100k + Miles on it and I Can Tell You After Owning A Honda Accord (Baby Boy) and A Lexus RX300, I can Testify that BMW is not just the Ultimate Driving Machine For Performance and Comfort, But Also that the X5 is a Very Satisfying Machine. The Car was Particularly Put through the Harshest conditions as it was Just Parked without Warming or anything for 2YEARS in America as I was Supposed to Use it there on A Planned Trip but I Had to stay Back to resolve certain Personal Issues. My Friend who The Car was With Had his Own Cars and was always On the Move. Leaving the Car untouched did affect a Few Basic things (The Water Pump and A Few Minor Components) but since i fixed them and Have Been Using the Car for almost 2YEARS in Lagos and Having Traveled with it to Abeokuta Several Times, Iseyin, Ibadan, Osun State, and a Lot of Waka Within Lagos, All I Have Had to do is Change Oil and Filters every 3Months and Car still Works and Sounds as Good as New. I Have The Best BMW Mechanic In Ladipo as My Mechanic Though But he Hasn't Had to Do Anything Major ever. The X5 3.0i is to me 1 of the Best SUVs ever Made and I will Never Trade it for the Japanese Mediocre. The 4.6 and 4.8s do Have a Lot of Major Issues Based On Reviews and all (though they are Better Performers) but the straight 6 3.0i is A Fantastic Machine. The BENz ML s of same Generation Can't even Compare Based on Reviews which You Can Easily find On The Tube. Let Nobody Advice You Wrongly. I still Own and Drive Mine. Feel Free to Call for a Test drive to Understand and see things for Your self.