Really depends on the model, the 2nd gen E70 X5 had it's LCI the 5th model year. 2007-2010 were pre-LCI and 2011-2013 were the LCI. E90 was the same way.
Originally Posted by Sean
The LCI (facelift) is typically released the fourth model year of a production run. A model is produced for a total of seven years before a new model is released.
15 BMW 328d xDrive Sports Wagon M Sport
15 Audi SQ5 Prestige
13 Honda Insight EX