According to Au7o's analysis of 1,070+ owner reports, the 2019 Mercedes-Benz G-Class has 3 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is COMAND/MBUX Infotainment System Freeze and Reboot with 450 owner reports. Across all issues, repair costs range from $400 to $1,200. DIY maintenance guides at au7o.io.
On the 2013-2023 Mercedes-Benz G-Class, the transfer case on newer G-Class models develops fluid leaks at the output shaft seals, particularly where the driveshafts connect. The leak typically starts as a slow seep and worsens over time, eventually leading to low fluid levels and potential transfer case damage if not addressed.
Replace the transfer case output shaft seals and top off with the correct Mercedes-approved transfer case fluid. Inspect the driveshaft flanges for wear marks that could cause premature seal failure. Clean the transfer case housing thoroughly to monitor for recurrence.
What Owners Are Using
Parts and tips from 340+ owners who fixed this issue
TipHave the transfer case fluid level checked at every oil change. The G-Class drivetrain is robust but only if fluids are maintained at proper levels.
Medium Confidence340 reportsLast reported by owners Oct 2025Reviewed Mar 2026
Community Reported
450 owners
On the 2013-2025 Mercedes-Benz G-Class, both the older COMAND NTG5 system and the newer MBUX system in the G-Class experience random freezes, black screens, and spontaneous reboots. The harsh vibration environment of the G-Class body-on-frame chassis may contribute to connection issues at the head unit. Navigation, audio, and backup camera all become unavailable during these events.
Perform a soft reset by holding the power/volume knob for 10 seconds. Visit the dealer for software updates — Mercedes regularly releases patches. If persistent, the head unit may need replacement under warranty. Ensure the vehicle has the latest map and firmware updates.
What Owners Are Using
Parts and tips from 450+ owners who fixed this issue
TipAlways accept dealer software updates when offered. Most MBUX freeze issues have been resolved through OTA or dealer-applied patches.
Medium Confidence450 reportsLast reported by owners Feb 2026Reviewed Mar 2026
Community Reported
280 owners
On the 2019-2025 Mercedes-Benz G-Class 4.0L V8 Biturbo, the W463A G-Class retains the iconic side-hinged doors which are significantly heavier than conventional doors due to their construction. The door hinges and check straps wear prematurely, causing the doors to sag and become difficult to close properly. The driver door is most commonly affected due to higher use frequency.
Replace worn door hinges and check strap assemblies. Dealer replacement is recommended due to the precise alignment required. Lubricate hinges at every service interval with Mercedes-approved grease to extend hinge life.
What Owners Are Using
Parts and tips from 280+ owners who fixed this issue
TipLubricate the door hinges and check straps with white lithium grease every 6 months. This significantly extends their lifespan on these heavy doors.
What are the most common Mercedes-Benz G-Class problems?
According to Au7o's analysis of 1,070+ owner reports, the 2019-2019 Mercedes-Benz G-Class has 3 documented issues. The most frequently reported are: Transfer Case Fluid Leak from Output Seal, COMAND/MBUX Infotainment System Freeze and Reboot, Door Hinge Sag on Heavy Doors. None are rated critical, but regular maintenance is recommended.
Is the Mercedes-Benz G-Class reliable?
The 2019-2019 Mercedes-Benz G-Class has 3 known issues documented across 1,070+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Mercedes-Benz G-Class problems?
Repair costs for known Mercedes-Benz G-Class issues range from $400 to $1,200, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2013-2023 Mercedes-Benz G-Class Transfer Case Fluid Leak from Output Seal?
The transfer case on newer G-Class models develops fluid leaks at the output shaft seals, particularly where the driveshafts connect. The leak typically starts as a slow seep and worsens over time, eventually leading to low fluid levels and potential transfer case damage if not a… Repairs typically run $500-$1,200. Severity: medium.
What is the 2013-2025 Mercedes-Benz G-Class COMAND/MBUX Infotainment System Freeze and Reboot?
Both the older COMAND NTG5 system and the newer MBUX system in the G-Class experience random freezes, black screens, and spontaneous reboots. The harsh vibration environment of the G-Class body-on-frame chassis may contribute to connection issues at the head unit. Navigation, aud… Severity: low.
What is the 2019-2025 Mercedes-Benz G-Class Door Hinge Sag on Heavy Doors?
The W463A G-Class retains the iconic side-hinged doors which are significantly heavier than conventional doors due to their construction. The door hinges and check straps wear prematurely, causing the doors to sag and become difficult to close properly. The driver door is most co… Repairs typically run $400-$1,200. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
