car doesnt start a lot of the times

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! Leaving the tailgate open on your 2021 Mazda CX-5 can definitely drain the battery, especially if it leaves interior lights or sensors active for extended periods. These modern vehicles are packed with electronics, and even something as simple as a tailgate being ajar can trigger systems that will slowly sap battery power. If the car often struggles to start, I'd check for any lights or systems staying on when the car is off and definitely make sure the tailgate is closed properly. A battery test might also be a good idea to rule out any other underlying issues. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.