A lawsuit filed in California on June 22, 2026 accuses BP, Marathon Petroleum, 7-Eleven, Walmart, Speedway, and Albertsons of using artificial intelligence to coordinate gasoline and diesel prices illegally, according to Reuters.

The complaint says the AI scheme raised gasoline prices by up to 22 cents per gallon and diesel by up to 33 cents per gallon, per Insurance Journal. Drivers in California are suing for damages, though the total amount has not been publicly stated.

How This Works

For over a decade, gas stations have used computers to watch competitor prices and adjust their own automatically. Recently, the technology has become far more sophisticated. New AI systems can now track thousands of factors at once and change prices within seconds—much faster than human managers could.

The lawsuit raises a straightforward question: when competing companies all use similar AI pricing software, do their prices end up matching by accident—or by design? Federal law says competing companies cannot work together to keep prices high. The question is whether automatic coordination through machines counts as an illegal agreement.

Why This Matters

Courts have never definitively answered this question. The companies will argue their pricing software operates independently, and that similar prices simply reflect a transparent market where everyone can see what everyone else charges. Plaintiffs will try to show that the companies' systems were designed or programmed in ways that intentionally align prices.

This lawsuit matters beyond gas stations. Grocery stores, airlines, and hotels all now use AI to set prices dynamically—meaning prices change constantly based on demand and competition. How courts rule on gas pricing could affect all of those industries too.

None of the named defendants had publicly responded to the complaint as of the reporting reviewed for this piece.