21 Top Selling Cars of 2015

18. GMC Sierra 1500

MSRP: $27,905

The GMC Sierra 1500 is one of the top selling cars and trucks of 2015. GMC saw a four percent improvement in total sales of the auto with more than 196,000 of the vehicles being sold this year. The base engine in the auto is a 4.3 liter six-cylinder rated at 285 horsepower. The overall fuel efficiency rating of the auto is 18 MPG (city) and 24 MPG (highway). When buying the truck new, consumers can choose to upgrade to a larger, V-8 engine rated at either 355 or 420 horsepower depending on which version is purchased. All-wheel drive is available as an option on the truck, and it can go from zero to 60 MPH in 7.3 seconds with a maximum vehicle speed of 99 MPH.