im getting vibration at idle in drive and when I put the car in neutral the vibration stops, also under hard acceleration the car vibrates at 100k per hour and loses power and when I back off it returns to normal. ive had the car to 2 different mechanics, one tells me its the engine mounts need replacing, which I find hard to believe and the other one suggested the auto needed servicing which I had done and to date the problem still exists. has anyone experienced simliar problems or have a solution?