Rust above the front door hinge

Yes, this is a common fault. The reason is that this area is not strong enough and whenever the door opens against the check strap, it flexes the area which had been softened by the welding (this can be easily observed by looking at the top hinge area while opening the door against the check strap: you will see the metal around the hinge moving in and out). The hinge cracks eventually but also flexes and breaks the multilayer seam directly above.