Originally Posted by LeMansX5

Actual sales chart for E70 X5 since the beginning.
December 2012 has the peak as BMW offered record deals for purchase of new BMWs to come first in "Best US luxury car sales" competition. That combined with X5 and X5 35d deals helped.

The other peak is December 2007; new X5 combined with Christmas /year-end deals. It will be competition again this year in December as so far Mercedes-Benz is ahead in sales.