Michigan gas prices
Michigan gas prices are volatile. The state can swing from below the national average to well above it in a matter of weeks. Part of this is geography. Michigan is surrounded by the Great Lakes, which limits pipeline routes. The state depends heavily on a few key refineries and pipelines, so any disruption causes quick price spikes.
Detroit is the main market, and prices there tend to follow a sawtooth pattern: stations drop prices to compete, then all raise them at once. This cycle is more extreme in Michigan than most states. The state has moderate gas taxes and a couple of refineries, but they don't produce enough to fully supply local demand.
Price history
Why do Michigan gas prices spike so suddenly?
Michigan depends on a limited number of pipelines and refineries. When any of these have issues, supply tightens quickly and prices jump. The state's geography, surrounded by Great Lakes, limits alternative supply routes.
What causes the up-and-down gas price cycle in Detroit?
Detroit has an unusually pronounced retail pricing cycle. Stations drop prices aggressively to compete, then raise them all at once when margins get too thin. This "sawtooth" pattern repeats every few weeks and is more extreme in Michigan than most states.
Does Michigan have its own refineries?
Yes, but not enough. Michigan has a couple of refineries, but they cover only a fraction of statewide demand. Most fuel comes via pipeline from refineries in Indiana, Ohio, and the Gulf Coast.