Winner – Maserati +216 percent
Whoa, Nelly! Maserati beat all comers, posting a monstrous 216 percent year-over-year sales increase last month. Deliveries clocked in at 1,053 for December and the prestigious Italian brand’s performance for all of last year was just as impressive. In 2013 its sales increased 75 percent, hitting nearly 5,000 units.