@BIPLAB DUTTA : Bro, 2015 90 HP engines had a jerk issue, that was experienced when one accelerated in 3rd gear at around 1700-1800 RPM. But it has nothing to do with the gear lever vibration. Later it was taken care by Fiat when they had come with the ECU update. As your car is Feb 2016 manufactured, it should have been taken care of from the factory itself. No harm is getting your ECU tested though.