NHTSA Owner Complaint Log

2003 Mercury Mountaineer Complaint Log

This page lists owner-reported complaints filed with NHTSA for the 2003 Mercury Mountaineer. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.

152 total complaintsPage 4 of 4

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SERVICE BRAKES, HYDRAULIC

WHEN APPLYING THE BRAKES, SOMETIME THE DRIVERS FOOT HIT THE GAS PEDAL, AND CAUSED A LONGER STOPPING DISTANCE. THE PEDALS WERE TOO CLOSE AND ON THE SAME HORIZONTAL PLAIN WHEN THE BRAKES WERE DEPRESSED. *AK *SCC *JB

ENGINE AND ENGINE COOLING

VEHICLE STALLS WHEN COMING TO A COMPLETE STOP. DEALERSHIP CANNOT DUPLICATE THE PROBLEM, AND ARE UNABLE TO FIX IT.*AK

Showing 151-152 of 152 complaints

NHTSA source checks for this vehicle year

Complaints: Separate successful check not recorded.

Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.

Vehicle import recorded: Apr 28, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.