One problem related to speed sensor has been reported for the 2012 Ford Fusion. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Ford Fusion based on all problems reported for the 2012 Fusion.
The vehicle was in motion on I 85 in alabama traveling approximately 70miles per hour. I noticed the vehicle started jerking,the speedometer started fluctuating, until I lost speed control. The wrench light was on. My vehicle had 70,000 miles;driven approximately 20 miles a day. I made the decision to turn around and go home driving in the right lane with no speedometer or a speedometer that would start fluctuating while my car was jerking. I took the vehicle to my local Ford dealer. The diagnostic codes were 070/071/072. They told me no warranty and it would be $1,000 to fix the transmission speed sensor. Unfortunately I did not have $1000 to fix the problem. My car operated ok until a few days when it started jerking,speedometer fluctuated until it went to reading 0 mph. At this time I was on I 20 in atlanta. This time I was afraid of being rear ended when I was stopped at a traffic light due to not picking up enough speed. I feel this is a serious safety issue and Ford should be required to replace transmission speed sensors. Case in point concerning Ford dealer quoting $1000-I found someone to repair for under $100. I would have been able to fix my car the previous year. Dealer said they would have to spend 4 plus hours labor due to where the transmission speed sensor is located. Person fixing my car said the transmission speed sensor is external easily accessible. I'm very disappointed in Ford and the dealer in this very scary issue.