Mercedes-Benz Mercedes G-Class 2018-present

Mercedes-Benz Mercedes G-Class 2018-present 9G-TRONIC Transmission Specifications

This document provides a detailed overview of the 9G-Tronic transmission specifications for the 2018-Present Mercedes G-Class. It includes technical details such as gear ratios, torque capacity, shift patterns, and compatibility with various engine configurations. The 9G-Tronic transmission is renowned for its smooth shifting, fuel efficiency, and robust performance, making it a critical component for both on-road and off-road driving. This resource is invaluable for automotive enthusiasts, technicians, and owners seeking to understand the transmission's capabilities, maintenance requirements, and potential upgrades. Whether you're diagnosing issues, performing repairs, or exploring performance enhancements, this guide offers comprehensive insights into one of Mercedes-Benz's most advanced transmissions.

Updated Jan 23, 2025

Overview Specifications

This document provides detailed specifications and technical information about the 9G-TRONIC transmission used in the 2018-Present Mercedes-Benz G-Class. It is designed to help users understand the features, performance, and maintenance of this advanced transmission system. Use the search and navigation instructions to quickly find relevant information or explore the sections for a comprehensive understanding.

How to Use

Use the search bar to enter keywords related to the 9G-TRONIC transmission, such as 'gear ratios' or 'shift modes'. Results will highlight relevant sections and subsections for quick access.

Scroll through the document or use the table of contents to jump to specific sections. Each section is organized into subsections with detailed technical points for easy reference.

Key Specifications

▲

Number of Gears

■

Max Torque Capacity

1000 Nm

●

Shift Time

100 ms

◆

Gear Ratio Spread

9.15:1

★

Transmission Weight

86 kg

Available Specifications

Transmission Overview

This section provides an introduction to the 9G-TRONIC transmission, its design philosophy, and its integration into the Mercedes-Benz G-Class. Learn about its key features and how it enhances driving dynamics and fuel efficiency.

Design and Architecture

9-speed automatic transmission with torque converter
Compact and lightweight design for improved efficiency
Wide gear ratio spread for optimal performance
Seamless integration with 4MATIC all-wheel drive system
Enhanced shift comfort and responsiveness
Adaptive shift programs for different driving conditions

Performance Benefits

Improved acceleration and fuel economy
Reduced CO2 emissions compared to previous models
Smooth and precise gear shifts
Support for manual shift mode via paddle shifters
Optimized for both on-road and off-road driving
Enhanced durability and reliability

Technical Specifications

This section delves into the technical details of the 9G-TRONIC transmission, including gear ratios, torque capacity, and operational parameters. It is ideal for users seeking in-depth technical insights.

Gear Ratios and Torque

1st gear ratio: 5.35:1
2nd gear ratio: 3.24:1
3rd gear ratio: 2.25:1
4th gear ratio: 1.64:1
5th gear ratio: 1.21:1
6th gear ratio: 1.00:1

Operational Parameters

Maximum torque capacity: 1000 Nm
Shift times as low as 100 milliseconds
Compatible with start-stop technology
Integrated thermal management system
Supports multiple driving modes (Comfort, Sport, Eco)
Designed for high-performance and luxury applications

Maintenance and Care

This section covers maintenance guidelines and best practices for ensuring the longevity and optimal performance of the 9G-TRONIC transmission. It includes service intervals and troubleshooting tips.

Service Intervals

Transmission fluid change every 60,000 miles
Regular inspection of transmission mounts and linkages
Software updates as recommended by Mercedes-Benz
Check for leaks or unusual noises during service
Replace transmission filter during fluid changes
Monitor transmission temperature during heavy use

Troubleshooting Tips

If shifts feel rough, check fluid levels and condition
Unusual noises may indicate worn components
Delayed engagement could signal a software issue
Overheating may require inspection of the cooling system
Error codes can be read using diagnostic tools
Consult a certified technician for complex issues

Search Specifications

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Transmission Specifications

Overview

Type: Automatic Transmission

Configuration: 9-speed

Platform: Mercedes-Benz G-Class

Material: Aluminum alloy casing

Location: Longitudinal placement, rear-wheel drive bias

Dimensions

Length: 28.5 inches (724 mm)

Width: 22.8 inches (579 mm)

Height: 18.3 inches (465 mm)

Weight: 187.4 lbs (85 kg)

input Shaft Diameter: 1.2 inches (30.5 mm)

Output Shaft Diameter: 1.4 inches (35.6 mm)

Fluid Capacity: 7.4 quarts (7 liters)

Materials

Casing: Aluminum alloy

Gears: High-strength steel

Clutch Packs: Carbon fiber reinforced friction materials

Seals: Synthetic rubber

Sensors: Stainless steel and plastic composites

Features

Shifting

Adaptive shift logic
Manual mode with paddle shifters
Smooth gear transitions
Dynamic gear selection based on driving conditions

Efficiency

Reduced internal friction
Optimized gear ratios
Start-stop functionality
Eco mode for fuel savings

Performance

Quick shift response
Sport mode for aggressive driving
Torque converter lock-up for direct power transfer
High torque capacity

integration

Seamless integration with 4MATIC all-wheel drive
Compatibility with Mercedes-Benz Drive Pilot system
Integration with engine control unit (ECU)
Adaptive cruise control compatibility

Durability

Robust construction for off-road use
Enhanced cooling system
Long service intervals
Resistance to extreme temperatures

Safety Features

Fail Safe

Emergency limp-home mode
Automatic neutral in case of failure

Monitoring

Real-time transmission temperature monitoring
Fluid level and pressure sensors

Protection

Overheat protection
Overload protection

Comfort Features

Noise Reduction

Low-noise gear meshing
Vibration dampening mounts

Smoothness

Seamless gear changes
Adaptive torque converter lock-up

Customization

Multiple driving modes (Comfort, Sport, Eco)
Personalized shift preferences

Convenience

Auto park function
Hill start assist

Accessories

Upgrades

Performance transmission fluid
Enhanced cooling kits
Custom shift paddles

Tools

Diagnostic scanner
Transmission fluid pump
Torque wrench set

Maintenance Kits

Transmission fluid and filter kit
Seal replacement kit
Sensor calibration tool

Maintenance

Service interval: Every 60,000 miles or 5 years

Service Items

Transmission fluid change
Filter replacement
Seal inspection
Sensor calibration
Software update

Maintenance Notes: Use only Mercedes-Benz approved transmission fluid. Regular software updates are recommended for optimal performance.

Warranty

Basic: Miles: 50,000
Years: 4
Coverage: Parts and labor

Powertrain: Miles: 100,000
Years: 7
Coverage: Transmission components

Extended: Miles: 150,000
Years: 10
Coverage: Limited coverage for major components

Corrosion: Miles: Unlimited
Years: 12
Coverage: Rust perforation

Production Details

Manufacturer: Mercedes-Benz AG

Manufacturing Process

Precision CNC machining
Automated assembly
Laser welding
Quality testing under simulated conditions

Quality Control: inspection: 100% component inspection
Testing: Durability and performance testing
Certification: ISO 9001 and ISO 14001 certified

Sustainability

Recyclable materials
Energy-efficient production
Waste reduction initiatives

Production Metrics: Annual Output: 500,000 units
Defect Rate: Less than 0.1%
Lead Time: 4 weeks

Service Information for 9g tronic transmission Service

Maintenance and service requirements specific to this component

30,000

Inspect transmission fluid level
Check for leaks
Update transmission software
Inspect seals and gaskets

Ensure the vehicle is on a level surface when checking fluid levels.

60,000

Replace transmission fluid
Replace transmission filter
Inspect clutch packs
Calibrate sensors

Use only Mercedes-Benz approved transmission fluid and filters.

120,000

Complete transmission overhaul
Replace worn components
Perform performance testing
Update all software systems

Major service should be performed by a certified Mercedes-Benz technician.

Common Questions

Find answers to common questions about torque specifications

Is the 9G-TRONIC transmission compatible with all 2018-Present Mercedes G-Class models?

The 9G-TRONIC transmission is compatible with most 2018-Present Mercedes G-Class models, including the G550 and G63 AMG. It is designed to work seamlessly with the M176 and M177 engines. However, compatibility may vary for specific trims or custom configurations. Always verify with your vehicle's VIN or consult a Mercedes-Benz dealer for precise compatibility details.

What are the maintenance requirements for the 9G-TRONIC transmission?

The 9G-TRONIC transmission requires regular maintenance to ensure optimal performance. Mercedes-Benz recommends a transmission fluid and filter change every 60,000 to 80,000 miles. Additionally, periodic software updates and inspections of the transmission control module are advised. Always follow the manufacturer's maintenance schedule outlined in the owner's manual or consult a certified technician.

How do I replace the 9G-TRONIC transmission in a 2018-Present Mercedes G-Class?

Replacing the 9G-TRONIC transmission involves several steps: 1) Disconnect the battery and remove the transmission pan. 2) Detach the driveshaft, exhaust system, and transmission mounts. 3) Unbolt the transmission and carefully lower it using a transmission jack. 4) Install the new transmission, ensuring proper alignment and torque specifications. 5) Reconnect all components and refill with the recommended transmission fluid. Professional installation is highly recommended.

What should I do if my 9G-TRONIC transmission is not shifting smoothly?

If your 9G-TRONIC transmission is not shifting smoothly, start by checking the transmission fluid level and condition. Low or contaminated fluid can cause shifting issues. Next, inspect for error codes using a diagnostic tool. Common solutions include resetting the transmission control module, updating software, or replacing worn components like solenoids or sensors. If issues persist, consult a certified technician.

How can I optimize the performance of my 9G-TRONIC transmission?

To optimize the 9G-TRONIC transmission's performance, ensure regular maintenance, including fluid changes and software updates. Use only Mercedes-Benz-approved transmission fluid. Avoid aggressive driving and allow the transmission to warm up in cold weather. Consider installing a performance tune or reprogramming the transmission control module for enhanced responsiveness and efficiency.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Mercedes-Benz 9G-TRONIC Transmission Service Manual

Coming Soon

Detailed service manual covering installation, maintenance, and troubleshooting for the 9G-TRONIC transmission.

Technical Service Bulletin for 9G-TRONIC Software Update

Coming Soon

Information on the latest software updates and improvements for the 9G-TRONIC transmission.

9G-TRONIC Transmission Parts and Accessories Catalog

Coming Soon

Comprehensive catalog of genuine parts and accessories for the 9G-TRONIC transmission.

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Technical Information

All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
Vehicle specifications and procedures may vary by model year, trim level, and region.
Always follow the manufacturer's recommended procedures and safety precautions.
Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
If you're unsure about any procedure, consult a qualified professional mechanic.

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