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Michigan Diesel Hits Record $6.25 as Gas Rises

By Markets Desk · 2026-09-15 · 1 min read
A row of industrial refinery storage tanks and pipes under a cloudy sky
Illustration: Tradingbird

Michigan diesel prices reached $6.25 per gallon on Tuesday, establishing a new all-time high. The national average simultaneously hit $6.26, with gasoline costs also climbing sharply in the state.

Michigan diesel prices reached $6.25 per gallon on Tuesday. This figure establishes a new all-time high for the state. The national average diesel price hit $6.26 on the same day. These figures mark a significant departure from previous levels. The price was $6.15 on Monday. It stood at $5.89 one week prior. A year ago, the cost was $3.65 per gallon.

The national average diesel price reached $6.00 for the first time on Friday. It climbed to the record $6.26 by Tuesday. Diesel fuel powers most commercial trucks. It is also used in some SUVs, pickups, and vans. The U.S. Department of Labor linked higher transportation costs to rising product prices in August. This trend indicates broader economic impacts from fuel inflation.

Gasoline Prices Surge in Michigan

Regular unleaded gasoline prices in Michigan rose 12 cents in 24 hours. The average price hit $4.43 per gallon on Tuesday. Monday's average was $4.31 per gallon. Wayne County averaged $4.34 in the Metro Detroit area. Livingston County recorded a higher average of $4.51. These increases affect daily consumer spending directly.

Patrick De Haan of GasBuddy noted additional hikes are possible this week. He stated the current jump is not related to refinery issues. He identified a power outage at the Joliet, Illinois refinery. He also cited a maintenance shutdown at the Whiting, Indiana facility. These events impact retail prices across Great Lakes states. The refinery-specific surge is expected to be short-lived.

Refinery Outages Drive Regional Costs

The Joliet refinery experienced a power outage. The Whiting refinery underwent a partial shutdown for maintenance. These simultaneous events reduce fuel supply in the region. Analysts expect the direct impact to be temporary. However, De Haan notes that baseline prices remain higher. Market responses continue to drive volatility in the sector.

GN auto markets/energy: gasoline prices reports confirm these trends. The data shows a clear upward trajectory. Consumers face higher costs for both diesel and gasoline. The situation remains fluid as market adjustments occur. Further price increases may follow in the coming days.

Based on reporting by CBS News, compiled by the Tradingbird desk.

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