Mercury Mariner owners have reported 1 problem related to gas recirculation valve (egr valve) (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Mercury Mariner based on all problems reported for the Mariner.
My wife was driving down the street in our Mercury Mariner when it suddenly went from 30 to 0 mph for no reason. Her foot was on the accelerator when it suddenly slowed to a stop, right in the middle of the road. When she tried to drive it again the powertrain alarm was on so we had it towed to the dealer. Ford mechanics found it to be an internal short in the throttle body and repalced it. Unbelieveably, we had to pay $342. 47, after Ford refused to do the replacement of an integral part of the engine even though the powertrain warranty was still in effect and it was a powertrain alarm. Not only do I believe this repair should have been paid by Ford under the warranty, but I believe we were forced to correct a dangerous defect that should have had a recall, as many others have had this same problems with their Ford products and it is extremely dangerous for a car to come to a sudden hault for no reason.
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all problems of the 2010 Mercury Mariner
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