Today I was on the road again. after the warm running phase I wanted to speed up completely then I noticed as briefly as a jerk or shake. after a few km he jerked at the normal speed so strongly that I thought a wheel is loose or something. briefly stopped the pneumatics and screws controlled but everything ok. the jerking, shaking is somehow daring but without that the steering wheel vibrates or something! I then went directly to my subaru garage and explained to them. they took him to the lift and let him run but nothing there was okay. they were then a bit perplexed. they will now get in touch with subaru switzerland and ask if there have been such problems before! car is 2 1/2 years old and only 36tkm and of course still factory warranty on it! did you ever have such problems?