I’ve noticed recently when unlocking my car there’s a weird noise that comes from the fuel cap area of my car? It’s sounds like the the cover to the fuel cap is unlocking. Does anyone know whats causing this?
If your car is more than a few years old the solenoid/motor assembly may be on the way out, it's fairly common. It can fail in the locked position so I would advise not letting your fuel level getting too low.
It happened to me on a Golf Mk6 went to fill up with an almost empty tank and it wouldn't open, was just about to call breakdown and it finally opened, phew!