Fiat Chrysler sales dropped 9.7 percent in September on a sharp pullback of fleet sales, while retail sales ticked up slightly.
The company said it had 174,266 sales last month, marking 13 straight months of U.S. sales declines. FCA's retail sales were up 0.3 percent for the month, while fleet dropped to 16 percent of its total sales in September.
Each of the automaker's core brands suffered setbacks in September, with only the fledgling Alfa Romeo brand seeing its sales increase on the addition of two new models.
Ram sales dropped just 0.3 percent in the month on a 1.4 percent decline in sales of its pickup lineup, and despite both the ProMaster and ProMaster City commercial vans setting sales records for the month of September.
Jeep sales dropped 3.8 percent in September on the selldown of the discontinued Patriot. The Compass recorded its best ever monthly sales in September, rising 75 percent over a year ago, while Renegade, Grand Cherokee and Wrangler sales all climbed by double digits.
Chrysler sales fell 16 percent on the selldowns of the discontinued 200 sedan and Town & Country minivan. Pacifica minivan sales rose 18 percent.
Fiat sales dropped 24 percent, with only the 500L recording a gain.
Dodge sales dropped 30 percent in September, with only the Durango recording an increase. Production of the brand's top-selling nameplate, the Grand Caravan minivan, has been temporarily discontinued for several months to allow for a redesign that will allow it to meet updated safety standards.
FCA said it ended the month with 506,806 unsold vehicles in inventory, a 76-day supply.