One problem related to car throttle stuck has been reported for the 2010 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Mercury Mariner based on all problems reported for the 2010 Mariner.
I was driving approx. 55mph on the parkway when my vehicle gave me a kick back (shook a little) and began to decelerate until it completely stopped. I could not get the vehicle to accelerate and had to pull over to the side of the road where I turned the vehicle off, turned it back on, and was able to drive again. I drove approx. 3 miles before the problem occurred a second time, this time I was unable to make it all the way to the shoulder before the vehicle completely stopped so I ended up at a dead stop in a turn lane. I was able to get the car to the shop without any issues occurring again and was told the issue was reading as "p2112 throttle actuator control stuck closed" - the entire part needs to be replaced and will cost me $400 as it is not covered under warranty. I called fomoco and was told that they were not aware of this issue despite many complaints I have seen online through the NHTSA. I am hopeful that Ford will come through and pay for a portion (if not all) of this repair as this was an extremely dangerous incident and one that is clearly occurring with many of their vehicles with the drive-by-wire throttle. If Ford does not recall this, it is only a matter of time before someone is seriously or fatally injured. I can only imagine if I would have been driving down I-95 at the time my throttle failed.