You won't get a rumble from the driveshaft (or the diff) when the car is stationary ..
It's going to be exhaust or engine / gearbox related if it's happening whilst the car isn't moving ...
Post a video or audio clip maybe ... that might help us to pinpoint it ..
It's going to be exhaust or engine / gearbox related if it's happening whilst the car isn't moving ...
Post a video or audio clip maybe ... that might help us to pinpoint it ..