Prime members can save 10¢ off every gallon of gas every day at participating bp, Amoco, ampm, and Thorntons stations, with no minimum or maximum gallons required. On Fridays through January 29, 2027, that discount increases to 20¢ off per gallon, up to 35 gallons. The offer requires linking an Amazon account to a free earnify account, and the discount can be applied at the pump using a phone number or the earnify app. Shop Now at Amazon