LCI is official BMW speak for Life Cycle Impulse (face lift, little life injected in an old model). The X5 E70 LCI is 2011, BUT 2012 models get LED Corona Rings (Angel Eyes).

2008 4.8i can have rough transmissions...jerky shifts, holding on to gears for too long, rough down shifts... Some were fixed very nicely with software updates, some were not (my 2008 4.8i transmission was immune to every software attempt). Good Luck.

For the E70, especially a 4.8i...the two most important things (to me) would be Sports Package with 20" Style 214 wheels and FACTORY EXT. WARRANTY!!!!!