Certified pre-owned vehicle sales have now reached 1.79 million for the year, outpacing year-ago figures by 4.3 percent, according to Autodata Corp.
In August, there were 233,238 certified sales, which was 5.8 percent stronger than the same month a year earlier.
The daily selling rate for the month was 8,971, versus 8,478 in August 2015.
Four brands posted best-ever certified sales during the month: Nissan, BMW, MINI and Subaru, according to Autodata.
Domestics sold 77,427 CPO vehicles for the month, up 0.9 percent year-over-year. Through eight months, they have moved 627,997 certified vehicles, down 0.2 percent year-over-year.
There were 115,953 sales of Asian-brand CPO vehicles in August (up 11.0 percent), putting the year-to-date sum at 871,668 units (up 10.4 percent).
European brands sold 39,858 certified vehicles last month (up 1.6 percent), with year-to-date sales down 2.3 percent at 292,440.