Automotive Forecast: New-Vehicle Sales Stall in September
Automobile sales in September are forecast to slow for the fifth straight month, as tight inventory, high prices take a toll on the industry.

Automobile sales in September are forecast to slow for the fifth straight month, as tight inventory, high prices take a toll on the industry.
ATLANTA – September U.S. auto sales are forecast to be significantly hampered by an ongoing lack of new-vehicle inventory. According to a forecast released today by Cox Automotive, the pace of auto sales, or seasonally adjusted annual rate (SAAR), is expected to finish near 12.1 million, the slowest pace since May 2020, when much of the country was closed during the first wave of the COVID-19 pandemic. The September 2021 sales pace will be down from August’s 13.1 million pace and down from the September 2020 pace of 16.3 million.
Sales volume is forecast by Cox Automotive to come in near a notably low 1.0 million units. The low volume expectations for September 2021 put the month on course to be among the worst in the past decade. Sales volume is expected to be down nearly 26% from last September and down 8.5% from last month.
The sales pace in the U.S. market has fallen every month since reaching a peak of 18.3 million in April. According to Cox Automotive Senior Economist Charlie Chesbrough: “After a strong spring selling season, the supply situation has worsened precipitously and is dragging sales down with it. The monthly declines have been large – the sales pace has declined by more than a million units in each of the past five months. Available supply on dealer lots is now 58% lower than last September, down nearly 1.4 million units.”
The new-vehicle supply shortage is impacting the market in many ways. Manufacturers have cut back significantly on incentives, and transaction prices have risen as a result. In addition, the lack of new-vehicle inventory is steering many dealers and consumers into the used-vehicle market, resulting in higher prices for both wholesale and retail used vehicles.
Q3 2021: THE AUTO INDUSTRY FINDS THE BOTTOM
With lower sales forecast for September, the third quarter of 2021 is forecast to finish with auto sales down 14% versus Q3 2020 and down 22% compared to the same period in 2019. Cox Automotive will officially revise its full-year forecast, with new projections scheduled to be released on September 30.
The underlying economic conditions in the U.S. are currently healthy enough to support higher new-vehicle sales levels. The demand is there. Inventory levels, however, are the unique problem facing the automotive market right now, with disruptions to the global supply chain challenging all automakers, severely impacting available inventory, and pushing many would-be buyers out of the market. In recent research by Cox Automotive’s Kelley Blue Book team, nearly half of would-be buyers indicated in August that they will likely step back from the market, many for three months or more.
Inventory conditions, however, are anticipated to improve in the coming months. “The expectation is that OEM supply issues will improve such that Q4 should have better selling SAARs than the September rate, but that doesn’t mean good selling rates,” said Chesbrough. “Vehicles are getting produced, and some OEMs have improved their supply situation. In recent months, OEMs seem to be managing the situation better now that they’ve had time to adjust. For example, automakers are improving their ability to redirect existing chips to the most important vehicles in their portfolios. This strategy should support better sales in the fourth quarter compared to the third quarter.”
SEPTEMBER 2021 SALES FORECAST HIGHLIGHTS
New light-vehicle sales are forecast to fall to 1.0 million units, or down 357,000 units, nearly 26% from last year. Compared to last month, sales are expected to fall 92,000 or nearly 8%.
The SAAR in September 2021 is estimated to be 12.1 million, down from last September’s early COVID recovery pace of 16.3 million and down from August’s 13.1 million supply-constrained level.
No segment saw a sales increase in September with the Mid-Size Cars and Compact SUV/Crossover segments seeing the largest year-over-year decreases at -41.0% and -33.7%, respectively.
SEPTEMBER 2021 NEW-VEHICLE SALES FORECAST
All percentages are based on raw volume, not daily selling rate.
Q3 2021 SALES AND YEAR-TO-DATE FORECAST
COX AUTOMOTIVE Q3 U.S. AUTO SALES FORECAST CALL
Chief Economist Jonathan Smoke and the Industry Insights team will share their take on the overall industry performance on Thursday, September 30, at 10 a.m. EDT. In addition to the economic factors influencing the market, the Industry Insights team will cover the industry’s hottest topics, including inventory, vehicle prices, and valuations. The revised Cox Automotive full-year forecast will be explained, including insights into the outlook for the remainder of the year. Register to attend.
About Cox AutomotiveCox Automotive Inc. makes buying, selling, owning and using vehicles easier for everyone. The global company’s more than 27,000 team members and family of brands, including Autotrader®, Dealer.com®, Dealertrack®, Dickinson Fleet Services, Kelley Blue Book®, Manheim®, NextGear Capital®, VinSolutions®, vAuto® and Xtime®, are passionate about helping millions of car shoppers, 40,000 auto dealer clients across five continents and many others throughout the automotive industry thrive for generations to come. Cox Automotive is a subsidiary of Cox Enterprises Inc., a privately-owned, Atlanta-based company with annual revenues of nearly $20 billion. www.coxautoinc.com
Click here for PDF.
More Fixed Ops

Extreme Temps Hinder EV Efficiency
American consumers might be happy to know that their preferred hybrids are slightly less impacted by extreme temperatures than fully electric vehicles, according to a new study.
Read More →
Ban on Air Bag Inflators by Chinese Maker Proposed
NHTSA blames 10 deaths and two serious injuries on what its investigators believe were illegally imported air bag inflators. It’s taking public comments before deciding whether to ban them outright.
Read More →
Fix It Forward Program Helps Man Regain Mobility
Albuquerque consumer who suffered a life-changing injury regains the use of his vehicle after Fiesta Volkswagen's service team shared his story with DOWC Cares.
Read More →
ASE Connects Partners With Worldpac to Build Technician Numbers
The collaboration is intended to help auto dealerships, automakers and after-market shops further develop the technician pipeline.
Read More →
Not as Tickled With Tires
U.S. consumers are finding less satisfaction with the rubber that meets their roads, though their loyalty to tire brands has lately inched up.
Read More →
Auto Recalls Sank Last Year
2025 Sedgwick data indicate that the number of vehicles affected fell to its lowest point in more than a decade.
Read More →
ASE Winter Registration Now Open
The deadline to register for the industry standard certification testing is March 31.
Read More →
U.S. Drivers Overdue for Major Services
Data shows dealers have ample opportunity ahead of the holiday travel season.
Read More →
Auto Dealers Losing Service Customers
Study finds that though overall service drive revenue is up, loyalty is eroding
Read More →
Jeeps Can Catch Fire
Hundreds of thousands recalled, some for second time, to address battery flaw
Read More →