Subaru of America eked out a 0.4 percent U.S. sales increase to produce the automaker's best September ever.
Subaru sold 55,120 vehicles last month, good enough to clear the previous September record of 54,918 sales set last year.
Still, it was the automaker's smallest year over year gain since March 2016 and came in a month other automakers soared and helped the industry rally 6.3 percent to post its first gain of the year.
ALG says Subaru's average new-vehicle incentive also fell 5.7 percent to $1,026 last month compared with September 2016.
"September marks 70 consecutive months of yearly month-over-month growth for our organization and our retailers," Jeff Walters, senior vice president of sales for Subaru, said in a statement. "Traffic to our retailers remains strong and it is encouraging to see sales of the all-new Crosstrek continue to grow."
The Outback led the way in September with U.S. sales of 16,330, down 3.8 percent. Albeit slight, September marked the first declines in Outback sales in 2017.
Forester demand fell 17 percent to 13,262 units. Despite the decline, Subaru noted that September marked the 50th consecutive month of more than 10,000 Foresters sold.
Subaru's smallest crossover, the Crosstrek, had another strong outing, chipping in 12,491 sales in September, an increase of 51 percent.
Impreza sales also increased, up 32 percent, to 6,324 units.
It was the best September ever for both Crosstrek and Impreza, Subaru noted.
Sales of the Legacy dropped 35 percent to 3,902 units while sales of Subaru's performance duo of the WRX and WRX STI dipped 6.4 percent to 2,510 units.
Subaru sold 301 BRZs in September, up from 300 in the year earlier period.