One problem related to transmission not engage has been reported for the 2010 Mercury Milan. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Mercury Milan based on all problems reported for the 2010 Milan.
The car behaves as if it was suddenly put into neutral. When you hit the gas the engine revs, but the transmission does not engage. The wrench and engine lights come on, and the car will sometimes sputter like it is going to shut off completely. The only way to get the car to function normally is to stop the car and turn it off and back on. I have had this happen on major highways and other busy roads. The problem is unpredictable. A mechanic has determined this to be a problem with the throttle body, but the part is on national back order. My car is un-drive-able.