Steering Wheel Vibrate problems of the 2013 Chrysler 200

I purchased this vehicle 11/2012. It is 2013 200s with the v6 engine. I've complained about the torque pull on both take-off and acceleration at highway speeds. It drifts to the right in a short driving distance and the steering wheel shakes at different speeds. I've returned it to the dealer for repairs on four different occasions only to have them say nothing is wrong. The problem began at about 2000 miles, it now has 10,500 miles and the problem continues. Once the warranty expires the problem will be found and I will have to pay to fix it. I do know the torque pull issue is because of the drive line design, the v6 should have a limited slip unit, they can't do anything about that now. The other issues they can, but won't because it costs money. Chrysler got my money but never again. I'm going elsewhere to purchase my next vehicle.