Rising diesel fuel prices have pushed costs to near record highs, creating a surge in unsold heavy-duty trucks that is straining dealerships across the industry. Analysts warn that the economic strain could lead to a modest decline in light-vehicle sales during the third quarter as consumer spending adjusts. The combination of soaring fuel expenses and a growing inventory backlog raises concerns about dealer profitability and market stability. With demand potentially softening, automakers and retailers may face pressure to adapt to shifting consumer priorities.


With diesel gasoline nearing $6.51 a gallon on average, swelling heavy-duty truck inventory is rattling dealers. Third-quarter light-vehicle sales are expected to fall slightly, forecasters say.