How do I open the fuel door for the Mazda 3 Mild Hybrid? Scarlett March 01, 2024 08:16 Updated The fuel door is located on the passenger’s side of the car. To open it, gently press down on the fuel door and it should pop open. To close it, just push the door back in until you hear a click. Related articles How do I switch on the Bluetooth for the Mazda 3? Where is the parking brake on the Mazda 3 Mild Hybrid? How do I open the fuel door for the Mazda 2? How do I start a Mazda 3? How do I get reimbursed for refueling?