Inflation accelerated in May, driven largely by higher energy prices rather than broad-based consumer demand. Gasoline prices rose 7% during the month and more than 40% year over year, pushing overall consumer inflation to 4.2%. Producer prices also climbed sharply, with gasoline, diesel, and transportation costs leading the increase. While underlying inflation remained relatively contained, rising fuel and transportation expenses continue to work their way through the economy and could place additional pressure on operating costs in the months ahead.

For fleet operators, the report highlights two key concerns: higher operating expenses and persistent financing costs. While auto credit availability improved to its strongest level since 2022, the gains were driven largely by longer loan terms, lower down payments, and increased lender risk tolerance rather than stronger consumer financial health. At the same time, consumers continue to rely heavily on revolving credit, suggesting growing financial strain. With energy-driven inflation remaining elevated and the Federal Reserve expected to remain cautious on interest rate cuts, fleets should prepare for continued pressure on fuel, transportation, and vehicle financing costs through the remainder of 2026.