Dec. 29, 2014—According to Cars.com, the sales of luxury vehicles increased 7.3 percent in 2014, compared to a 5.4 percent increase in the sales of economy, standard, and compact cars.

While most of these purchases are made by individuals taking advantage of the warming economy, a good number of these transactions can be attributed to rental companies like Luxury Line Auto Rental buying the new model year versions needed to keep their luxury fleets up to date.