Mitsubishi Outlander 2014
 

Hi All,
My Outlander 2014 car has a humming noise while at speed of 10 to 30kmpm & also while releasing the accelerator pedal. When I check with the service center they told me the sound from the transmission and need to change the transmission. But I don't have any issue with pickup or vehicle performance. Does anyone have the same issue? what will be the actual problem?