2023 Mercedes-Benz G-Class Problems: 3 Issues Every Owner Should Know

2023 model year · 1,070+ owner reports · Updated April 2026

According to Au7o's analysis of 1,070+ owner reports, the 2023 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.

All 3 Known Issues

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Community Reported

340 owners

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.

Common Symptoms

Oil spots under center of vehicle
Whining noise from transfer case area
Transfer case fluid level low at service
Fluid drips visible on transfer case housing

How to Fix

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.

Typical repair cost:$500 - $1,200

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340+ owners have reported this issue

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Community Reported

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.

Common Symptoms

Infotainment screen goes black randomly
System reboots while driving
Navigation freezes mid-route
Backup camera not displaying
Audio cuts out intermittently

How to Fix

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.

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450+ owners have reported this issue

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Community Reported

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.

Common Symptoms

Door does not close flush with body
Door requires extra force to latch
Visible gap misalignment between door and body
Creaking noise when opening or closing door

How to Fix

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.

Typical repair cost:$400 - $1,200

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280+ owners have reported this issue

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Community Reported

Medium Confidence280 reportsLast reported by owners Jan 2026Reviewed Mar 2026

Frequently Asked Questions

What are the most common Mercedes-Benz G-Class problems?

According to Au7o's analysis of 1,070+ owner reports, the 2023-2023 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 2023-2023 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.

2023 Mercedes-Benz G-Class Problems: 3 Issues Every Owner Should Know

All 3 Known Issues

2013-2023 Mercedes-Benz G-Class: Transfer Case Fluid Leak from Output Seal#

Common Symptoms

How to Fix

What Owners Are Using

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2013-2025 Mercedes-Benz G-Class: COMAND/MBUX Infotainment System Freeze and Reboot#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

2019-2025 Mercedes-Benz G-Class: Door Hinge Sag on Heavy Doors#

Common Symptoms

How to Fix

What Owners Are Using

Research This Issue

Other Mercedes-Benz Models

Frequently Asked Questions

What are the most common Mercedes-Benz G-Class problems?

Is the Mercedes-Benz G-Class reliable?

How much does it cost to fix common Mercedes-Benz G-Class problems?

What is the 2013-2023 Mercedes-Benz G-Class Transfer Case Fluid Leak from Output Seal?

What is the 2013-2025 Mercedes-Benz G-Class COMAND/MBUX Infotainment System Freeze and Reboot?

What is the 2019-2025 Mercedes-Benz G-Class Door Hinge Sag on Heavy Doors?