INFINITI had a U.S. sales increase of 4.8% in December 2013 compared to December 2012*. There were a total of 13,232 units sold. 12,627 units were sold in December 2012. This was the luxury automaker’s best-ever December sales. The all-new INFINITI Q60 luxury sports sedan sold 4,568 units that month. The sales of INFINITI sports sedans increased over 13.4% for the month. The INFINITI QX60 also had a best-ever December sales amount with 3,744 units sold. This is an increase of 38.3%.