One problem related to engine funny noise has been reported for the 2005 Mercury Montego. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Mercury Montego based on all problems reported for the 2005 Montego.
I just pulled my car off the lot not even 10 minutes later there was jerking then my car stopped dead in the middle of a busy street. This has happended numerous times with the worst being on a one way and my neices no more than 10 years old in the car my car made a kind of a loud humming noise,jerked then stopped in the street. At times I can't even reverse or go up steep hills.