2014 Mercedes-Benz Gl-Class Reliability ReportKeepScore 68/100 · top failure points · buy or avoid
Quick Facts · 2014 Mercedes-Benz Gl-Class
- Scores 4 points below the strongest nearby year — the 2012 Mercedes-Benz Gl-Class earns a 72.
- The system most likely to surface first: airmatic air suspension (major severity).
- No active NHTSA safety recalls on record — a clean recall slate for the 2014 model year.
2014 Mercedes-Benz Gl-Class: Buy or Avoid?
The 2014 Mercedes-Benz GL-Class offers impressive luxury and capability, but it's a vehicle that demands rigorous maintenance and a significant repair budget. While fundamentally well-built, its complex systems, particularly the air suspension and diesel emissions equipment, represent substantial potential financial liabilities for the unwary buyer. This is a choice for those who appreciate German engineering and are prepared for the associated premium ownership costs.
The 2014 Mercedes-Benz GL-Class is a formidable luxury SUV offering a compelling blend of comfort and capability. However, its sophisticated engineering comes with a significant price tag for maintenance and potential repairs. If you're prepared for premium ownership costs, have a substantial repair budget, and can…
Best Model Years
2015-2016 (later X166 models, with some improvements and final year of generation)
Years to Avoid
None explicitly to avoid across the X166, but the GL350 BlueTEC (diesel) requires more scrutiny than gasoline variants.
Biggest Strengths
- Robust core mechanicals (engine/transmission in good condition)
- Excellent build quality and luxurious interior materials
- Strong safety ratings and advanced driver-assist features
2014 Mercedes-Benz Gl-Class — Known Trouble Spots
The systems that tend to fail first on the 2014 Mercedes-Benz Gl-Class, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
The air springs (airbags) are prone to developing leaks over time, leading to a sagging vehicle, especially after sitting. The air compressor and valve block are also common failure points. This affects ride quality and vehicle height.
Components such as the AdBlue (DEF) heater, NOx sensors, and DPF (Diesel Particulate Filter) are highly susceptible to failure. These issues often trigger check engine lights, limp mode, and expensive repairs, essential for emissions com…
Various electrical gremlins can manifest, including infotainment (COMAND) system malfunctions, intermittent sensor failures (e.g., mass airflow, wheel speed), and parasitic battery drains. These can be difficult and costly to diagnose.
2014 Mercedes-Benz Gl-Class Mileage Danger Zones
The mileage windows when the 2014 Mercedes-Benz Gl-Class most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the GL-Class is still relatively new. Focus on routine fluid checks and tire rotations. Brake pad wear might start showing, especially if driven hard.
Maintenance Zone
Critical maintenance items like transmission fluid service, differential fluid, and spark plugs are often due. This is also where initial signs of Airmatic issues might begin to appear (e.g., compressor working harder).
Elevated Risk Zone
This mileage brings increased risk of Airmatic component failures (air springs, compressor) and potential diesel emissions system issues (GL350). Electrical gremlins and sensor failures become more common.
High Risk Zone
Beyond 100k, virtually any complex system is fair game for failure. Expect significant expenditure on suspension, emissions (if diesel), and potentially major engine or transmission work if maintenance has been deferred. A comprehensive…
2014 Mercedes-Benz Gl-Class Ownership Cost Outlook
What it typically costs to keep the 2014 Mercedes-Benz Gl-Class on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$800-1,500 (standard luxury service)
Moderate Repairs
$1,000-3,500 occasionally (e.g., Airmatic repair, major sensor failure)
How Long Does the 2014 Mercedes-Benz Gl-Class Last?
For maximum peace of mind, aim for a GL-Class with under 80,000 miles and a verifiable service history. Be prepared for a higher incidence of major repairs once it crosses the 100,000-mile mark, especially if the air suspension or diesel emissions system haven't been serviced or replaced.
What 2014 Mercedes-Benz Gl-Class Owners Actually Say
What Owners Love
- Exceptional ride comfort and quiet cabin on long journeys.
- Powerful engine options provide confident acceleration and towing capability.
- Luxurious interior with high-quality materials and excellent fit-and-finish.
- Spacious third-row seating, genuinely usable for adults on shorter trips.
Common Frustrations
- Very high cost of ownership due to expensive parts and specialized labor.
- Frequent and costly air suspension component failures.
- Frustrating and expensive diesel emissions system issues (GL350).
- Infotainment system can be finicky or outdated compared to newer tech.
Who Should Buy the 2014 Mercedes-Benz Gl-Class?
Best For
- Families needing comfortable 7-passenger luxury transportation.
- Buyers prioritizing a luxurious ride and strong towing capability.
- Individuals with a healthy discretionary income for premium maintenance.
Not Ideal For
- Budget-conscious buyers seeking low running costs.
- Anyone who neglects preventative maintenance or defer repairs.
How the 2014 Mercedes-Benz Gl-Class Compares to Rivals
The GL-Class sits squarely in the luxury full-size SUV segment, offering a balance of luxury, performance, and capability that often comes with commensurate ownership costs. It typically fares better than its British luxury competitors but falls short of Japanese reliability t…
More Reliable Than
- Range Rover (L322/L405 of similar vintage) - generally higher frequency of electrical and air suspension issues
- BMW X5 (E70/F15) - often comparable but GL offers more interior space
- Audi Q7 (4L) - similar complexity, but GL offers more traditional SUV feel
Comparable To
- Porsche Cayenne (958) - similar high performance, high maintenance costs
Safety Recalls on the 2014 Mercedes-Benz Gl-Class
No active NHTSA safety recalls on file for the 2014 Mercedes-Benz Gl-Class. Always verify with your VIN atnhtsa.gov.
What breaks on the 2014 Mercedes-Benz Gl-Class?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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Mercedes-Benz Gl-Class — Year-by-Year Comparison
Compare KeepScores across nearby years of the Mercedes-Benz Gl-Class. Click any year for its full report.
Competing 2014s Worth a Look
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 2014 Mercedes-Benz Gl-Class
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Frequently Asked Questions
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