Mercedes-Benz Mercedes B-Class 2018-present 7G-DCT Transmission Specifications
This document provides detailed technical specifications for the 7G-DCT (7-Speed Dual Clutch Transmission) used in the 2018-Present Mercedes B-Class. It includes information on gear ratios, torque capacity, shift patterns, and maintenance intervals. Designed for automotive enthusiasts, technicians, and engineers, this guide offers insights into the transmission's performance, efficiency, and compatibility with various engine types. Whether you're performing routine maintenance, diagnosing issues, or enhancing vehicle performance, this resource serves as a comprehensive reference to ensure optimal operation and longevity of the 7G-DCT transmission in the Mercedes B-Class.
Overview Specifications
This document provides detailed specifications and technical information about the 7G-DCT transmission system used in the 2018-Present Mercedes B-Class. It is designed to assist users in understanding the transmission's features, performance, and maintenance requirements. The document is organized into sections for easy navigation and includes a quick reference guide for key specifications.
How to Use
Use the search function to quickly locate specific terms or topics within the document. Enter keywords related to the 7G-DCT transmission, such as 'gearbox', 'shift patterns', or 'maintenance'.
Navigate through the document using the table of contents or by scrolling through sections. Each major section is labeled with a title and description, and subsections provide detailed technical points.
Key Specifications
Transmission Type
7-speed Dual-Clutch Automatic
Maximum Torque
400 Nm
Weight
85 kg
Fluid Change Interval
60,000 km
Compatible Engines
4-cylinder, 6-cylinder
Available Specifications
Transmission Overview
This section provides an introduction to the 7G-DCT transmission, including its design, purpose, and key features. It covers the transmission's role in enhancing vehicle performance and fuel efficiency.
Transmission Overview
This section provides an introduction to the 7G-DCT transmission, including its design, purpose, and key features. It covers the transmission's role in enhancing vehicle performance and fuel efficiency.
Design and Functionality
- 7-speed dual-clutch automatic transmission
- Optimized for smooth and rapid gear shifts
- Designed for both performance and fuel efficiency
- Compact and lightweight construction
- Supports manual and automatic driving modes
- Adaptive shift patterns based on driving conditions
Performance Benefits
- Reduced shift times for improved acceleration
- Enhanced fuel economy compared to traditional automatics
- Seamless power delivery during gear changes
- Improved driving dynamics and responsiveness
- Lower emissions due to efficient operation
- Compatible with hybrid and electric powertrains
Technical Specifications
This section outlines the technical details of the 7G-DCT transmission, including its dimensions, weight, and operational parameters. It also covers compatibility with different engine types.
Technical Specifications
This section outlines the technical details of the 7G-DCT transmission, including its dimensions, weight, and operational parameters. It also covers compatibility with different engine types.
Dimensions and Weight
- Length: 450 mm
- Width: 300 mm
- Height: 250 mm
- Weight: 85 kg
- Compact design for easy integration
- Aluminum casing for reduced weight
Operational Parameters
- Maximum torque capacity: 400 Nm
- Gear ratios optimized for performance and efficiency
- Operating temperature range: -40°C to 150°C
- Lubrication system: Fully integrated oil pump
- Cooling system: Integrated heat exchanger
- Compatible with 4-cylinder and 6-cylinder engines
Maintenance and Service
This section provides guidelines for maintaining and servicing the 7G-DCT transmission. It includes information on routine checks, fluid changes, and common troubleshooting tips.
Maintenance and Service
This section provides guidelines for maintaining and servicing the 7G-DCT transmission. It includes information on routine checks, fluid changes, and common troubleshooting tips.
Routine Maintenance
- Check transmission fluid levels every 20,000 km
- Inspect for leaks and wear every 30,000 km
- Replace transmission fluid every 60,000 km
- Ensure proper calibration of shift points
- Monitor for unusual noises or vibrations
- Regularly update transmission software
Troubleshooting
- Delayed or rough shifts: Check fluid levels and quality
- Transmission overheating: Inspect cooling system
- Error codes: Use diagnostic tools for analysis
- Unresponsive gear changes: Check clutch operation
- Noise during operation: Inspect for mechanical wear
- Software glitches: Perform system reset or update
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Transmission Specifications
Overview
- Type
- 7-speed dual-clutch transmission
- Configuration
- Transverse-mounted
- Platform
- MFA (Modular Front Architecture)
- Material
- Aluminum housing
- Location
- Front-wheel drive configuration
- Manufacturer
- Mercedes-Benz
Dimensions
- Length
- 14.2 inches (360 mm)
- Width
- 13.8 inches (350 mm)
- Height
- 10.2 inches (260 mm)
- Weight
- 154 lbs (70 kg)
- input Shaft Length
- 8.7 inches (220 mm)
- Output Shaft Length
- 9.8 inches (250 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Housing
- Aluminum alloy
- Gears
- Case-hardened steel
- Clutch Packs
- Carbon fiber composites
- Seals
- Synthetic rubber
- Sensors
- Stainless steel and plastic composites
Features
- Performance
-
- Quick shift times under 200 milliseconds
- Adaptive shift logic
- Launch control functionality
- Sport and manual modes
- Efficiency
-
- Low internal friction design
- Optimized gear ratios
- Eco mode for fuel saving
- Start-stop system compatibility
- Technology
-
- Electronic control unit (ECU) integration
- CAN bus communication
- Adaptive learning algorithms
- Multiple driving mode selection
- Durability
-
- High-temperature resistant materials
- Sealed for life design
- Robust clutch design
- Enhanced cooling system
- Safety
-
- Fail-safe limp mode
- Overheat protection
- Gear position monitoring
- Anti-rollback feature
Safety Features
- Protection Systems
-
- Overheat protection
- Overpressure protection
- Monitoring
-
- Gear position sensor
- Clutch wear monitoring
- Emergency Features
-
- Fail-safe limp mode
- Manual override capability
Comfort Features
- Driving Modes
-
- Comfort mode
- Sport mode
- Manual mode
- Shift Quality
-
- Smooth gear changes
- Adaptive shift patterns
- Noise Reduction
-
- Sound insulation
- Low vibration design
- Usability
-
- Paddle shifters
- Automatic park lock
Accessories
- Upgrades
-
- Performance software
- Shift paddles
- Transmission cooler
- Maintenance
-
- Filter kit
- Gasket set
- Fluid change kit
- Diagnostic
-
- OBD-II scanner
- Transmission diagnostic tool
- Software update kit
Maintenance
- Service interval
- Every 40,000 miles or 48 months
- Service Items
-
- Transmission fluid change
- Filter replacement
- Software updates
- Clutch wear inspection
- Seal and gasket check
- Maintenance Notes
- Use only Mercedes-Benz approved transmission fluid
Warranty
- Basic Coverage
- Miles: 50,000Years: 4Coverage: Parts and labor
- Powertrain Coverage
- Miles: 100,000Years: 7Coverage: Major components
- Corrosion Coverage
- Miles: UnlimitedYears: 10Coverage: Perforation only
- Roadside Assistance
- Miles: UnlimitedYears: 4Coverage: 24/7 assistance
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision CNC machining
- Automated assembly
- Laser welding
- Quality testing
- Quality Control
- Testing: Durability testing, Performance testing, Environmental testingStandards: ISO 9001, ISO/TS 16949
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient manufacturing
- Waste reduction programs
- Production Metrics
- Units Per Year: 500,000Defect Rate: 0.01%Production Time: 8 hours per unit
Service Information for 7g dct transmission Service
Maintenance and service requirements specific to this component
- Transmission fluid change
- Filter replacement
- Software updates
- Clutch wear inspection
- Seal and gasket check
Use only Mercedes-Benz approved transmission fluid
- Comprehensive fluid and filter change
- Clutch pack inspection
- Transmission mount check
- Sensor calibration
Special tools required for clutch inspection
- Complete transmission overhaul
- Clutch pack replacement
- Seal and gasket replacement
- Performance testing
Recommended to perform at authorized service center
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 7G-DCT transmission compatible with all 2018-Present Mercedes B-Class models?
Is the 7G-DCT transmission compatible with all 2018-Present Mercedes B-Class models?
The 7G-DCT (7-speed Dual Clutch Transmission) is compatible with most 2018-Present Mercedes B-Class models, particularly those with petrol or diesel engines. However, compatibility may vary depending on the engine type and region. It is essential to verify your vehicle's specific model and engine code with an authorized Mercedes-Benz dealer or consult the vehicle's technical documentation to ensure proper compatibility.
Q2 What are the maintenance requirements for the 7G-DCT transmission?
What are the maintenance requirements for the 7G-DCT transmission?
The 7G-DCT transmission requires regular maintenance to ensure optimal performance. Mercedes-Benz recommends a transmission fluid and filter change every 40,000-60,000 miles or as specified in the owner’s manual. Additionally, inspect the transmission for leaks, wear, and software updates during routine service intervals. Proper maintenance helps extend the lifespan of the transmission and prevents costly repairs.
Q3 How do I install or replace the 7G-DCT transmission in a Mercedes B-Class?
How do I install or replace the 7G-DCT transmission in a Mercedes B-Class?
Replacing the 7G-DCT transmission is a complex process that requires specialized tools and expertise. Begin by disconnecting the battery and removing components such as the driveshaft, exhaust system, and transmission mounts. Carefully lower the transmission and replace it with a new or refurbished unit. Reassemble all components and ensure proper alignment. It is highly recommended to have this procedure performed by a certified Mercedes-Benz technician.
Q4 What are common troubleshooting steps for the 7G-DCT transmission?
What are common troubleshooting steps for the 7G-DCT transmission?
If you experience issues like rough shifting, delayed engagement, or warning lights, start by checking the transmission fluid level and condition. Inspect for leaks or damaged connectors. Use a diagnostic tool to scan for error codes and perform a software update if available. If problems persist, consult a certified technician for further diagnosis, as internal components may require repair or replacement.
Q5 How can I optimize the performance of the 7G-DCT transmission?
How can I optimize the performance of the 7G-DCT transmission?
To optimize the 7G-DCT transmission, ensure regular maintenance, including fluid changes and software updates. Use high-quality transmission fluid specified by Mercedes-Benz. Avoid aggressive driving habits that can stress the transmission. Additionally, consider using the vehicle’s manual shift mode for smoother control in specific driving conditions. Proper care enhances performance and extends the transmission’s lifespan.
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 B-Class 7G-DCT Service Manual
Coming SoonDetailed service manual covering installation, maintenance, and troubleshooting for the 7G-DCT transmission in the 2018-Present Mercedes B-Class.
7G-DCT Transmission Technical Bulletin
Coming SoonTechnical service bulletin addressing common issues, updates, and improvements for the 7G-DCT transmission.
Mercedes B-Class Transmission Parts Catalog
Coming SoonComprehensive catalog of transmission components and accessories for the 2018-Present Mercedes B-Class.
Legal Disclaimer
Important information about using this content
Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.
General Information
Warranty & Liability
The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.
We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.
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.
Intellectual Property
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
Diagnostic
Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.
Repair
Expert in both traditional mechanical repairs and modern vehicle systems.
Additional Expertise
Documentation
Created over 500 detailed repair guides and technical documents.
Training
Conducted technical training sessions and contributed to repair databases.
Certifications & Research
Certifications
- ASE Master Technician Certification
- Advanced Diagnostic Specialist
- Hybrid/Electric Vehicle Systems
- Performance Tuning Expert
Research & Community
Actively researches emerging technologies and contributes to automotive forums.