In regards to the X5 having a split tailgate and the Jeep having a solid, 1-piece rear tailgate. TRUST me...the split BMW rear is THE BEST. You can open the top part, and especially groceries will not go rolling into the street. I remeber when I went from my Range Rover (2 piece tailagate, sourced from BMW) to a Mercedes ML...I missed the 2-pieces tail gate. I am SO happy the E70 kept the split tailgate, just like the first gen E53 BMW. I also, think the 2 piece tail gate makes the rear look more athletic, and less Mini-van ish!!