During what ended up being another best-ever year for the certified pre-owned business, sales for Big 3, Asian and European brand automakers all increased year-over-year, with domestics notching a double-digit gain.

According to Autodata Corp., there were 926,997 CPO sales by Big 3 brands in 2015, which beat year-ago figures by 11.8 percent.

Asian brands moved 1.18 million certified vehicles, which was up 8.1 percent.

Meanwhile, there were 442,672 CPO sales by European automakers, which was 6.3 percent stronger than 2014 numbers.

Overall, the industry posted 2.55 million CPO sales, which was a 9.1-percent gain, Autodata noted.

Among the Big 3, FCA Group and Ford Motor Co. had record years.  Asian brands posting best-ever years were Acura, Infiniti, Kia, Lexus, Nissan, Subaru and Toyota.

European record-breakers were Audi, BMW, Land Rover, Maserati, Mercedes-Benz, MINI and Porsche.