The best selling Jaguar car models as of December 2010 are the XF and the XJ. Jaguar’s slowest selling model, for the same period, is the XK. In October of 2010, the Jaguar XF model sold 612 units, which was an increase of 262 units over the September sales. The XF model posted a year-end total of 6925 units sold. On the other hand, at the end of October 2010, the XJ sold 476 units, with an increase of 26 units over September for a year-end total of 4,278. By the end of 2010, Jaguar had posted a decline in sales and ranked #33.