California Drivers Sue Major Gas Stations for Using AI to Inflate Prices by 30 Cents Per Gallon

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A class-action lawsuit filed in Sacramento federal court accuses BP, 7-Eleven, Walmart, and other major operators of using Kalibrate's AI tool to coordinate gas prices across 1,700 California stations. The suit alleges prices rose by as much as 30 cents per gallon in areas where the algorithmic pricing system was widely used, with some stations charging up to $7 per gallon. Plaintiffs claim the practice violates California's Cartwright Act and Assembly Bill 325, which took effect in January 2025 to prohibit algorithmic price fixing.

Major Retailers Face Gas Station Lawsuit Over AI-Driven Pricing

California drivers have filed a proposed class-action lawsuit against some of the nation's largest fuel retailers, alleging they used an AI-powered pricing algorithm to coordinate gas prices and keep them artificially high. The complaint, filed on June 22, 2026, in Sacramento federal court, names BP, Circle K, Marathon Petroleum, 7-Eleven, Walmart, and Albertsons as defendants, alongside Kalibrate Fuel Systems, the company that provides the pricing tool at the center of the dispute

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The defendants collectively operate more than 1,700 gas stations across California, giving the alleged coordination scheme significant reach

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. According to the complaint, these operators fed data into the same algorithmic pricing software, which drew on competitors' prices to recommend what each station should charge. This practice, plaintiffs argue, amounted to collusion that lifted prices in lockstep rather than through ordinary competition

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Source: Tom's Hardware

Source: Tom's Hardware

California Gas Prices Surge Under AI-Powered Pricing Algorithm

The financial impact on California drivers has been substantial. In areas where high percentages of stations used Kalibrate's AI tool, gas prices rose by as much as 30 cents per gallon compared with what competitive pricing would have produced

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. Some reports indicate that gasoline prices were inflated by as much as 22 cents per gallon, while diesel increased by 33 cents per gallon

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. The result was some operators charging as much as $7 per gallon, pushing prices to what the complaint describes as "astronomical" levels

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Source: Gizmodo

Source: Gizmodo

The complaint notes that every additional penny per gallon costs California drivers approximately $134 million per year

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. Californians already pay the nation's highest gas prices, averaging $5.58 per gallon for regular according to AAA, compared to the national average of $3.93

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Antitrust Violations Under California's New Legal Framework

The lawsuit alleges that the defendants violated the Cartwright Act, California's main antitrust law, by using the AI-based tool to "coordinate high prices and wring more money from the pockets of consumers"

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. More significantly, the case represents one of the first tests of Assembly Bill 325, a California law that took effect on January 1, 2025, specifically designed to crack down on algorithmic price fixing

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Under Assembly Bill 325, no one may "use or distribute a common pricing algorithm as part of a contract, combination in the form of a trust, or conspiracy to restrain trade or commerce." California law defines a pricing algorithm as "any methodology, including a computer, software, or other technology, used by two or more persons, that uses competitor data to recommend, align, stabilize, set, or otherwise influence a price or commercial term"

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. The plaintiffs argue that feeding rivals' data into a shared tool from Kalibrate Fuel Systems is exactly the kind of behavior the new law was meant to catch, even where no executive ever sat in a room agreeing on a price

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Hub-and-Spoke Conspiracy Theory Gains Traction

The California case fits within a broader legal framework that regulators have been developing for years. The Justice Department's antitrust division has sharpened its focus on shared pricing platforms, arguing that competitors routing pricing decisions through a common algorithm can constitute a hub-and-spoke conspiracy, even without direct communication between the companies involved

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. This legal theory positions a central actor—in this case, Kalibrate's software—as coordinating competitors without requiring direct contact between them.

Plaintiffs are not alleging that gas station operators met to fix prices. Instead, they claim that a shared AI tool did it for them

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. The complaint states: "While families struggle to afford the commute to work, defendants have conspired to put an end to competition, joining an AI-powered trust to ensure that no matter where a driver turns, the price for gasoline is artificially high"

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Source: PYMNTS

Source: PYMNTS

Implications for Price Optimization Across Industries

The outcome of this case could carry implications well beyond the fuel sector. Kalibrate's tool is used across thousands of stations nationally, and the legal theory underlying the complaint—that a shared AI pricing platform enables unlawful coordination among competitors—applies to any industry where multiple companies rely on the same algorithm to set prices

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. More than 60 bills targeting algorithmic pricing are pending across more than half of U.S. states, and antitrust enforcers are focusing on the potential for shared pricing systems to facilitate coordination among competitors even without explicit collusion

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In May, California's Division of Petroleum Market Oversight, an independent agency within the California Energy Commission, issued subpoenas to some station owners over elevated prices

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. The lawsuit seeks unspecified damages for drivers who paid too much for gasoline

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. The defendants have not yet responded in court, and the allegations remain unproven

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. How the Sacramento court draws the line between coordinated pricing and independent firms reaching similar conclusions from similar data could shape how far California's new statute reaches beyond the forecourt

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