Fuel Leak from Fuel Delivery Module (FDM)

A cracked flange on the fuel delivery module can cause fuel leaks, posing a fire hazard. This critical safety concern was addressed by NHTSA recall 16V777000. Early remedy parts availability was an issue, increasing exposure risk. Estimated repair cost: $500 - $1,000.

Front Wheel Bearing Wear

While a low severity recall (15E045000) addressed incorrect dimensions on aftermarket front wheel bearings, OEM bearings can still experience wear over time, leading to noise and potential failure. Estimated repair cost: $300 - $600.

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2011 Mercury Mariner Maintenance guide

Name: Maintenance dataset for 2011 Mercury Mariner
Creator: Carfocal

v1.0Updated Jun 12, 2026Ethan Miller4 Sources Analyzed2 Critical Recalls

MAINTENANCE SUMMARY

The 2011 Mercury Mariner, with an average reliability verdict, requires diligent attention to its electric power steering system and fuel delivery module, which have been subject to critical recalls. Regular inspections and adherence to service intervals are key to mitigating potential safety hazards and ensuring longevity.

View Critical Issue: Electric Power Steering (EPS) Failure

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Reliability Score

Est. Annual Maintenance Cost

$400 - $700

TSBs & Recalls

25 TSBs | 3 Recalls

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Key Takeaways

Prioritize verification and completion of critical recalls concerning the electric power steering and fuel delivery systems.
The vehicle's average reliability rating is influenced by potential steering and fuel leak issues.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance