Michigan Gas Prices Dropped Following Refinery Repairs

The state average for regular unleaded gasoline fell by 24 cents to $4.69 per gallon over the past week.

Updated on Sept. 28, 2026 in Buying/Selling

Michigan Gas Prices Dropped Following Refinery Repairs

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Michigan drivers saw relief at the pump as the average price for regular unleaded gas decreased 24 cents between September 21 and September 28. This drop follows a volatile period that included a 60-cent price spike in the preceding week.

Why it matters

The decline was driven by a refinery serving the Great Lakes region returning to service after being offline. This restoration of supply has helped alleviate the recent upward pressure on fuel costs for motorists across the state.

Michigan gas prices are currently 43 cents higher than last month and $1.65 higher than this time last year. Meanwhile, diesel fuel prices also decreased slightly, resting at an average of $6.77 per gallon.

The players

Michigan

This state is the primary market where fuel price fluctuations were recorded.

The details

While the statewide average is now $4.69, prices vary by region, with cities like Ann Arbor, Benton Harbor, and Metro Detroit seeing higher costs than areas like Flint, Marquette, and Saginaw. Diesel fuel prices also showed signs of easing after reaching a record high of $6.89 on September 23.

June 2022 saw the record high unleaded gas price of $5.22.
September 21, 2026, served as the baseline for the recent 24-cent price decrease.
September 23, 2026, marked the record high diesel price of $6.89.
September 28, 2026, reported an average gas price of $4.69.

Roadmap

The volatility in Michigan fuel pricing highlights the sensitivity of the regional supply chain to local refinery outages. This incident underscores how dependent the Midwestern automotive market remains on specific, localized infrastructure to keep transportation costs stable.

Drivers can expect a slight reduction in their weekly fuel budgets as the 24-cent drop per gallon takes effect at local stations. For a standard 15-gallon tank, this decrease provides a modest immediate savings compared to the prices seen just one week prior.

The takeaway

While supply chain stabilization has brought prices down, regional variance means drivers in cities like Ann Arbor may still face higher costs than those in Flint. Monitoring local pump prices remains the best way for motorists to manage their transportation expenses during periods of refinery maintenance.