Mazda 3 (2005) Won’t Start After Accident – No Ignition Despite Multiple Repairs

I own a 2005 Mazda 3, and after a recent accident, the car continued to run for two days. However, after that, it completely stopped starting—even though the engine cranks, there is no ignition.

I have tried multiple repairs, but nothing has fixed the issue. Mechanics suggested it might be the crankshaft sensor, but replacing it didn’t solve the problem. Then, they checked the electrical wiring, but that wasn’t the issue either. Finally, they suspected the ECU (engine control unit), yet even after inspecting that, the car still won’t start.

Does anyone have experience with a similar problem or know a real solution? Mazda, I need urgent support to resolve this issue!