I have an 08 A6, with the CVT. I bought the car last year with about 54K miles and now have about 63K miles. At slow speeds (and particularly when I first start the car), it does what can only be described as bucking or jerking. I replaced the CVT fluid not long ago and this seemed to help, but only temporarily. At this point it is only an annoyance, but I am afraid it will get worse. Anyone have experience with this?