Certified pre-owned vehicle sales fell 1.4 percent year-over-year in August, but are still on track for another record-breaking year.

According to data from Autodata Corp., there were 230,013 CPO sales for the month, compared to 233,236 in August 2016.

Certified sales were up 1.3 percent from July, when CPO sales fell 3.2 percent year-over-year. 

Through eight months, there has been a shade less than 1.8 million CPO sales, which beats the year-ago pace by 0.3 percent, Autodata said.

In August, three brands — Nissan, Jeep and Audi — had their best months ever for certified, according to Autodata. 

Domestic brands combined to sell 78,927 CPO units for the month (up 1.9 percent), and they have moved 620,646 for the year (down 1.2 percent).

Asian brands moved 110,157 certified vehicles in August (down 5 percent), with year-to-date numbers at 873,269 (up 0.1 percent).

With 40,929 CPO sales in August, European brands were up 2.7 percent last month. Through eight months, they are up 4.2 percent with 304,796 CPO cars sold.