For what it has likely held for over a decade, if not more, 2015’s best selling full size car title belongs to the Chevy Impala.
The Impala sold 134,946 units globally during the year. Of course, there is an issue with the Impala’s sales. It includes both the ninth and tenth generations, both of which are still in production. The ninth generation will finally be killed off this year after serving fleet companies since the tenth generation launched. We will have to wait until 2016 sales are reported to see how the end of the W-body effects sales. There is currently no way to calculate how many units are for each generation since General Motors does not report them separately.
Though the United States is by far the largest market for the antelope-named vehicle, the Impala was released into South Korea where it quickly became a hit for Chevy. In fact, it outsold the locally produced Daewoo Alpheon, which is a rebadge of the Buick LaCrosse. The Impala also sees strong sales in the Middle East.
The second best full size car was also a General Motors product: the Buick LaCrosse. The LaCrosse sold 126,138 units for the year much in thanks to China.
Big thanks to Matt at BestSellingCarsBlog.com for adding markets to the tabulations.