Hi, on my 2013 audi a4 2.0 tdi with 110k miles it shakes when accelerating on throttle, for example 60mph in 6th gear and put your foot in gradually the shake goes though the car and can see the gear stick shaking. The shake seems to be able to be controlled with the throttle, doesn't seem to come through the steering wheel I have had it checked over by a reputable mechanic and he could not see anything wrong in terms of cv joints etc. He also done some road tests measuring fuel and boost p