Detroit Three’s Auto Market Share Forecast to Be ‘Lowest in History’: Cox
Cox Automotive forecasts that the combined market share of Ford, GM, and Stellantis will hit a record low in Q3, as Asian automakers like Hyundai and Toyota gain ground. GM led U.S. sales in Q3 with 671,000 units, but sales declined over 5%. Toyota ranked second with a 2% increase. Ford saw a 6.6% decrease. Tesla reported Q3 deliveries of 486,532, exceeding expectations, and shares rose 5%. Analysts remain optimistic about Tesla's long-term prospects.
How this was made

The 30-second read
Why it matters
The forecast signals a structural shift in U.S. auto demand toward Asian brands, especially hybrids, which could pressure Detroit OEMs and lift Asian peers.
Market read
The article highlights a potential reallocation of investor capital within the auto sector, favoring Asian manufacturers over traditional U.S. OEMs.
What to watch
Potential government incentives for domestic manufacturing and upcoming EV subsidies could mitigate the projected decline.
Background
Cox Automotive released a forecast that the combined market share of Ford, GM, and Stellantis will be the lowest in history, while Asian manufacturers like Hyundai and Toyota are projected to dominate U.S. sales.
Ticker impact
Ford's Q3 sales fell 6.6% to about 507,000 vehicles, indicating weakening demand for its core models.
likely pressure as investors price in lower market share and sales slowdown
Ford is a core Detroit Three member; a sales drop combined with a forecast of the lowest historic market share suggests near‑term downside.
General Motors led U.S. sales in Q3 with 671,000 units but deliveries fell more than 5%, signaling weakening momentum.
likely pressure as market share outlook erodes and sales momentum slows
GM's status as top seller makes the sector forecast especially relevant; a sales dip plus a bleak share outlook can trigger sell pressure.
Stellantis held third place in U.S. sales, with a 6.6% decline in light‑duty vehicle deliveries.
likely pressure as investors adjust expectations for lower U.S. market share
Stellantis is part of the Detroit Three; the forecast of historic low share directly impacts its outlook.
Toyota ranked second in U.S. sales, up 2% to over 633,000 cars, and benefits from strong hybrid demand.
potential upside as investors rotate to Asian manufacturers gaining market share
While not a Detroit Three member, Toyota is highlighted as a beneficiary of the shifting market dynamics.
Market effects
U.S. auto sector may see a reallocation from Detroit manufacturers to Asian brands, affecting related supply chains.
North American auto market outlook softens for domestic OEMs, while Asian OEMs gain exposure.
The shift could influence global auto industry sentiment and affect related equities worldwide.
Counterpoint
Despite the forecast, Detroit Three may benefit from brand loyalty and upcoming product launches that could offset share loss.
Key entities
- CompanyFord Motor Company
U.S. automaker, part of the Detroit Three.
- CompanyGeneral Motors
U.S. automaker, part of the Detroit Three.
- CompanyStellantis
U.S. automaker, part of the Detroit Three.
- CompanyHyundai Motor Co.
South Korean automaker gaining U.S. market share.
- CompanyToyota Motor Corp.
Japanese automaker with strong U.S. sales.


