NHTSA Complaint #11469406 — 2017 BUICK ENVISION

At 15,238 miles I was at gas station to fill up vehicle only to discover the fuel filler flap was broken and could not get gas nozzle in vehicle for fill up. Immediately had my mechanic look at it and they were able to repair it. They were able to reattach spring but could not attach sealing plate without a disassemble. Had to replace the fuel neck assembly. No warning lights had come on dash for gas vapor, or other things. I have pictures of mileage and broken fuel filler cap. This could have been disastrous if I was in some small town that could not get parts or had run out of gas somewhere or if gas vapors started leaking.