The members-only warehouse club is set to open its first standalone gas station in Mission Viejo, California, according to reporting by the Orange County Register. The 40-pump station, expected to open by spring 2026, will be the retailer's largest gas station and sell Costco's in-house brand of Kirkland Signature Gasoline.

Costco is planning to open a stand-alone gas station in Mission Viejo, California, a suburb of Los Angeles. The announcement comes after the company expanded its gas stations’ operating hours to 10 p.