7 Flags Car Wash is located at 4030 Alhambra Ave, Martinez, CA. This business specializes in Car Washes. 7 Flags Car Wash is open Mon, Open 24 hours; Tue, Open 24 hours; Wed, Open 24 hours; Thu, Open 24 hours; Fri, Open 24 hours; Sat, Open 24 hours; Sun, Open 24 hours and accepts American Express, Cash, Discover, Mastercard and Visa.