You’ll want to avoid the 2015-2019 Mercedes GLE 350 model years due to significant reliability concerns and costly repairs. These models suffer from air suspension failures, transmission roughness, and extensive electrical malfunctions affecting critical safety systems. The 2016-2018 models are particularly problematic, with documented engine failures occurring as early as 22,000 miles. Even the 2020-2021 models show persistent issues. Understanding specific model year problems can help protect your investment and prevent expensive surprises.
Most Problematic GLE 350 Years at a Glance
While Mercedes-Benz’s GLE 350 remains a popular luxury SUV choice, certain model years have demonstrated significant reliability issues that potential buyers should avoid. From 2015 issues through 2019 concerns, the W166 generation exhibits recurring problems with air suspension failures and transmission roughness.
The 2017 models struggle with transmission valve body wear and air suspension faults, while 2018 variants face extensive electrical malfunctions affecting safety features and infotainment systems. Much like the brake system failures reported in other vehicle brands, the GLE 350 requires careful inspection of these critical components. Similar to the steering lock failures that plagued the 2008 GL450, these suspension issues can create dangerous driving conditions. The 2019 models present serious engine concerns including carbon buildup, oil leaks, and timing chain stretch. Quality control problems persist into 2020-2021, particularly with panel gaps and paint defects. You’ll want to be especially cautious of pre-2017 models showing transmission problems and any units with unresolved suspension or electrical issues. Regular diagnostic testing can identify MBUX system freezes that commonly plague these model years.
The 2016 GLE 350’s Critical Defects
The 2016 GLE 350 stands out among problematic years due to widespread mechanical and electrical failures that considerably impact reliability. The air suspension system commonly develops leaks in struts and lines, leading to ride height drops and premature compressor failures. These issues significantly compromise vehicle handling and ride quality. Electrical system updates were required through recall 16V440000 to prevent unexpected engine shutdowns. Critical recalls, particularly NHTSA ID 17V081000, addressed potentially loose bolts in the upper control arm and axle stub connection, affecting 37 units. You’ll also encounter persistent starting system failures from dead batteries and faulty alternators, along with frequent HVAC malfunctions including premature compressor failures around 60,000 miles. With 94 technical service bulletins covering everything from steering problems to engine warning lights, the 2016 model demonstrates substantial quality control issues requiring extensive dealer interventions.
Understanding the 2017-2018 Model Reliability Issues
Significant reliability concerns plague 2017-2018 Mercedes GLE 350 models, with documented engine failures occurring as early as 22,000 miles. You’ll notice ticking noises and metal debris in oil filters, often leading to complete engine replacements. Engine performance suffers from timing chain wear, causing rough idling and reduced acceleration. Like the transmission failures reported in Ford Edge models, these issues can lead to dangerous driving conditions. Similar to the TIPM failures in 2011-2015 Jeep Grand Cherokees, electrical system malfunctions can create serious safety hazards.
Critical maintenance tips include monitoring the air suspension system, which commonly develops leaks in struts and lines. You’ll need to address any sagging or uneven ride height immediately to prevent chassis damage. Despite these issues, 92% of owners still recommend the vehicle based on its luxury features and comfort. The models’ electronic systems present additional challenges, with frequent infotainment glitches and climate control failures. Interior hardware issues, such as faulty power seats and tailgate mechanisms, further compound reliability concerns. Post-warranty repairs can be exceptionally costly, particularly for major engine work and suspension system overhauls.
2020-2021 Model Years: New Generation, Same Problems
Despite Mercedes’ redesign efforts, 2020-2021 GLE 350 models continue exhibiting serious mechanical and electronic issues that mirror previous generations. The air suspension system suffers from chronic leaks, failing compressors, and faulty height sensors, leading to unstable ride quality. Even with technology upgrades, the MBUX infotainment system remains plagued by software glitches and connectivity problems.
Engine concerns include carbon buildup in direct injection systems, persistent oil leaks, and premature wear. The model has faced twenty-two NHTSA recalls for the 2021 year alone, highlighting major quality control issues. Interior quality hasn’t met expectations, with dashboard rattles and deteriorating materials – even in models equipped with genuine leather. The switch to a 4-cylinder turbocharged engine has resulted in increased noise and reduced refinement compared to previous 6-cylinder versions. These issues, combined with lengthy repair times and warranty complications, make these model years particularly problematic for potential buyers.
Common Electrical and Software Failures to Watch For
When considering electrical issues in the GLE 350, potential buyers should be aware of several widespread software and wiring concerns that affect both safety and functionality. Two significant recalls highlight these risks: a wiring harness defect in 2020 models that could prevent proper airbag deployment, and a potentially dangerous 48-volt ground connection issue that poses fire risks. Owners can check their VIN online to verify if their vehicle is affected by any open recalls.
You’ll also need to watch for common electrical issues including intermittent system shutdowns, COMAND interface failures, and persistent tire pressure monitoring malfunctions. These software glitches often require multiple dealer visits and specialized diagnostic equipment to resolve. With diagnosis costs ranging from $122 to $179, you’ll want to ascertain any potential purchase undergoes thorough electrical system inspection by certified technicians who can properly evaluate these complex issues.
AIRMATIC Suspension System Concerns
Beyond electrical concerns, the AirMATIC suspension system represents a major consideration for potential GLE 350 buyers. Pre-2016 models show higher rates of air strut leaks and compressor failures, with rear sagging being particularly common in pre-2015 vehicles. The system’s ability to maintain wheel contact during bumpy road conditions makes proper functioning critical for safety.
When troubleshooting AirMATIC issues, watch for warning lights indicating “Air Suspension Failure” or “Stop Vehicle Too Low.” You’ll also want to listen for hissing sounds near wheel wells and monitor for uneven vehicle height, especially after extended parking. These symptoms often point to failing air struts or leaking air lines.
For AirMATIC maintenance tips, regular system inspections are essential. Fault codes showing extended compressor fill times typically indicate either a failing compressor or system leaks. Consider specialized diagnostic scanning when investigating suspension problems, as some issues stem from sensor malfunctions rather than mechanical failures.
Long-Term Ownership Costs and Repair Expenses
If you’re considering a Mercedes GLE 350, understanding the long-term ownership costs is essential for financial planning. You’ll face average annual maintenance costs of $1,194, with ten-year cumulative expenses potentially reaching $15,234 – higher than typical luxury SUV long term expenses.
Maintenance trends show significant cost escalation in older models, particularly with major repairs. Cylinder head replacements can reach $11,500, while air suspension system repairs range from $1,000 to $6,500. With 0.7 annual visits to repair shops being typical, electrical issues frequently plague these vehicles, requiring expensive module replacements and sensor repairs. The W166 generation (2015-2019) exhibits more suspension and electrical problems, while newer W167 models risk costly engine repairs. After five years, electrical and sensor faults become more common, making ownership costs less predictable and potentially more burdensome.
Recommended Model Years for Better Reliability
Understanding which Mercedes GLE 350 model years offer better reliability can help you avoid costly ownership experiences. For peak reliability, focus on the 2019, 2022, 2023, and 2024 model years. The 2019 model launched the W167 generation with improved build quality and fewer recalls, while 2022-2024 models feature upgraded driver assistance systems and enhanced infotainment.
These recommended model years consistently earn higher reliability ratings from Consumer Reports and industry experts. The 3.0L I6 turbocharged engine delivers impressive performance and efficiency in the 2019 model year. You’ll find advanced safety features like adaptive cruise control and lane-keeping assist as standard equipment, particularly in 2022 and newer models. The post-2019 GLEs also deliver superior ride comfort, quieter cabins, and expanded powertrain options, including efficient hybrid variants. These improvements translate to better resale values and lower long-term maintenance costs.
