I just recently purchased a 15 Subaru WRX premium model with CVT. I know CVT. Anyways, when I start the car in the mornings it shakes a lot. To the point, that the car moves. I can feel the movement from underneath the driver's side. I have taken the car to the Subaru dealership twice and they say that it is normal. Is anyone else experiencing the same issues. BTW, sometimes it feels as if the car is going to shut off. I wonder if its the idle air control valve. Any input is appreciated.