The 2015 X5 should be the 2nd model year of the 3rd generation X5 (F15?). The "facelift" (now referred to as
LCI - life cylce impulse) usually occurs around the 5th model year.
For example...I believe the model year introductions for the US market are as listed below:
e53:
- 2000
- 2001
- 2002
- 2003
- 2004 (facelift aka {LCI} life cycle impulse)
- 2005 (facelift aka {LCI} life cycle impulse)
- 2006 (facelift aka {LCI} life cycle impulse)
e70:
- 2007
- 2008
- 2009
- 2010
- 2011 (facelift aka {LCI} life cycle impulse)
- 2012 (facelift aka {LCI} life cycle impulse)
- 2013 (facelift aka {LCI} life cycle impulse)
f15:
- 2014
- 2015