BP (BP), Marathon Petroleum (MPC), and Walmart (WMT) were sued, among others, by California drivers for allegedly using artificial intelligence to inflate fuel prices, Reuters reported Tuesday, citing a proposed class action lawsuit.

The lawsuit claims the gas station operators violated state antitrust and algorithmic price-fixing laws by using a software tool from Kalibrate to coordinate the higher pricing, Reuters said.

Drivers alleged that fuel costs increased by up to $0.30 per gallon in regions where a high percentage of stations adopted the technology, according to the report.

BP, Marathon Petroleum, Walmart, and Kalibrate did not immediately respond to MT Newswires' requests for comment.

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