Ok. I have a mazda 6 2005 with automatic transmission . It has approximately 65000 miles on it. From last 2000 miles, i have felt a sort of forward jerk when car shifts from 1st to 2nd gear. All other gears are smooth. I have taken good care of car. Transmission fluid has been changed after every 30000 miles. Now recently, there is sort of hard forward jerk when car shifts from first to second gear. Seems like the whole car jumps forward. There are no engine checks light at all. This happens when the car is cold, however after running car 5 to 6 miles, the intensity of jerk reduces or sometimes completely gone.But still there is jerk. What could be causing this? Is it transmission related or transmission mount gone bad? The dealer is asking 200 $ only for diagnosing? Any suggestion plz.