A car stalling can be caused by a multitude of things. It could be something as simple as a loose gas cap, or it could be something more serious like a faulty fuel pump. If your car stalls randomly, it's best to take it to a mechanic to get it checked out. There are a few things that could cause a car to randomly stall. One possibility is that there is something wrong with the fuel system. If the fuel isn't getting to the engine, the car will stall. Another possibility is that there is something wrong with the ignition system. If the spark plugs aren't firing, the car will stall. Finally, there could be a problem with the engine itself. If the engine isn't getting enough air or if the timing is off, the car will stall.