Five years since I rolled it off the showroom and I’m still learning. We stopped for gas at my favorite top tier station. But the flipper door inside the filler neck wouldn’t open when I pushed the gas nozzle in. I thought it was jammed so I kept hitting it harder. Finally with my short temper, I needed gas and started jamming it violently. Suddenly it finally opened and I filled up while thinking about the failure and if I’ll need a complete filler neck assembly. When I finished, I tried inserting it again and again it wouldn’t open. Even though I have B2B in effect, I started pricing the unit anyway when I got home. Then I came across the same problem on someone’s you tube video. Turned out to be that the gas station put a smaller diameter nozzle probably from a diesel pump on that particular pump. The correct diameter is required to hit 2 buttons inside the tube to unlock the flapper. The usual fix is to move to a different pump with the correct nozzle. Last resort would be to use the funnel that came with the car.