Mercury Mystique owners have reported 1 problem related to engine head gasket failure (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 Mystique based on all problems reported for the Mystique.
Head gasket failure. Coolant system failure. Check engine light came on without warning, flashed and constant. I guess what they say about Ford is right found on road dead fix or repair daily ouch.
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all problems of the 1996 Mercury Mystique
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