Leaks can develop in the radiator, hoses, or water pump, leading to coolant loss and potential engine overheating. This is a common issue in many luxury vehicles as they age. Estimated repair cost: $400 - $1000.

Oil Leaks (Valve Covers, Oil Pan)

Aging seals and gaskets, particularly on the valve covers and oil pan, can degrade and lead to oil leaks. This requires timely repair to prevent oil starvation and potential engine damage. Estimated repair cost: $500 - $1500.

CARFOCALvehicle research

2014 Mercedes-Benz GL-Class Maintenance guide

Name: Maintenance dataset for 2014 Mercedes-Benz GL-Class
Creator: Carfocal

v1.0Updated Jun 14, 2026Ethan Miller4 Sources Analyzed

MAINTENANCE SUMMARY

The 2014 Mercedes-Benz GL-Class presents a generally reliable ownership prospect with an "Excellent" public reliability verdict and no reported recalls or complaints. However, potential owners should prioritize inspections of the air suspension system and engine cooling components, as these are common areas for wear and potential failure in luxury SUVs of this era.

View Critical Issue: Air Suspension System Failure

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Reliability Score

Est. Annual Maintenance Cost

$500 - $800

TSBs & Recalls

0 TSBs | 0 Recalls

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Key Takeaways

The 2014 Mercedes-Benz GL-Class shows excellent public reliability with no recalls or complaints.
Proactive maintenance is key to managing ownership costs for this luxury SUV.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance