Detroit Automakers Face $2 Billion Cost Hikes as Truck Sales Soar

General Motors, Ford, and Stellantis reported third-quarter earnings this week, revealing a split performance in the American auto industry. While revenue figures climbed for all three manufacturers, each company warned investors that rising input costs are eroding margins. The financial reports, released on October 29, show that strong demand for large trucks is currently masking the strain caused by expensive materials and logistics.

Sales of light-duty trucks continue to drive the sector. General Motors reported that its light-duty truck sales increased by 9% over the past year. Stellantis saw a 34% rise in U.S. pickup sales. Ford's F-Series remains a top seller. These gains pushed total revenue up by 2.9% for General Motors, 2% for Ford, and 1% for Stellantis. Sherry Ann House, Ford's chief financial officer, told investors on an earnings call that customers have remained resilient despite higher fuel prices and interest rates.

The average price for a new vehicle in the United States reached just over $50,000 in September. This figure is close to a record high, according to Kelley Blue Book data. Consumers are paying more for high-end trims and larger vehicles. These categories tend to be more profitable for manufacturers. However, the cost of building these vehicles is rising faster than the selling price in many cases.

Chief Financial Officers at the major automakers identified three primary cost drivers: tariffs, diesel fuel, and computer chips. Paul Jacobson, the chief financial officer at General Motors, stated that the company expects materials and diesel costs to run the business up to $2 billion this year. He also noted that the company is paying about $2.5 billion in tariff costs, a figure lower than earlier forecasts due to partial refunds. Jim Farley, Ford's CEO, said that commodities, memory, and logistics costs represent a year-over-year headwind of approximately $2 billion for Ford.

Stellantis CEO Antonio Filosa described higher prices for memory chips and raw materials as an industry-wide phenomenon. The company will provide more detailed cost information in its fourth-quarter update. These costs stem from several factors. Tariffs on imported steel, aluminum, and copper have increased the price of vehicle frames and wiring. Copper demand is also rising due to the expansion of data centers and electric vehicle batteries. Diesel prices for shipping vehicles to dealerships have hovered around $6.35 per gallon, near their September peak, according to AAA data.

The end of the $7,500 federal tax credit for electric vehicles has also reshaped the market. The credit expired on September 30, 2025, as part of the One Big Beautiful Bill Act. Since then, electric vehicle sales have dropped nationally. General Motors reported that its third-quarter sales fell by 6% compared to the previous year, partly due to a smaller electric vehicle market. Jacobson said the company is right-sizing its production capacity to align with current demand while preparing for future growth in electric vehicle penetration.

Tesla has regained market share in the electric vehicle segment. The company's global sales fell during the quarter compared to the same period last year. However, its share of new electric vehicle sales in the United States has grown to almost 52%, according to Edmunds. This share increase comes as other automakers adjust their product plans. Hybrid vehicle sales are up 27% in the past year as consumers seek an alternative to high fuel prices.

Sam Fiorani, a vice president at Auto Forecast Solutions, noted that the industry moves slowly between vehicle generations. He said that tariffs and supply chain disruptions have thrown off profit calculations for manufacturers. Fiorani expects the Detroit Three to offer more hybrid vehicles in the coming years because the transition to fully electric vehicles is taking longer than anticipated. Tesla CEO Elon Musk spent little time on car sales during his earnings call. He emphasized the company's focus on robotaxis and humanoid robots, noting that capital expenditures are nearly double what they were a year ago.