Opel Refuses to Fix the Hill Start Assist Defect in My 2024 Corsa

In my brand new 2024 Opel Corsa, using the adaptive cruise control for 30-40 minutes causes the Hill Start Assist (Hill Holder) system to malfunction. When stopped on an incline, the car fails to release the brake upon acceleration, making it impossible to move and severely disrupting the flow of traffic. The issue only temporarily resolves after the vehicle is turned off and left to wait for a while. I first took the car to the Kağıthane Asal service center for this defect. For 7-8 months, I was stalled with repeated claims that "we've updated the software, it's fixed," but they often attempted to return the vehicle without testing it, and the problem persisted. After some time, they began to ignore my phone calls. Subsequently, the Başakşehir Avek service center I visited officially confirmed, after testing, that the problem is chronic and present in all identical Corsa models they inspected. However, the response from Opel Headquarters was shocking: "If this situation exists in all vehicles, it cannot be considered a fault." With this unbelievable justification, my request for a replacement of the defective product was denied, and it was stated that no solution would be provided for this serial production defect. Throughout this process, I was also systematically misled by Opel Customer Service. Complaint tickets they claimed were "created" turned out to have never existed. I followed their advice to "collect the vehicle from service, your file will remain open," only to later find out my file was closed on the grounds that "I had taken delivery of the car." My complaints regarding these false statements were blocked, and I was told I would "not receive a response." Opel has itself identified a serial and chronic defect in its 2024 Corsa models but is victimizing its customers with the absurd logic that "if it's in all of them, it's not a problem." Service centers employ delaying tactics, while customer service drives the process to a dead end with misleading information.