Mercedes-Benz Mercedes CLA 2019-present 8G-DCT Transmission Specifications
This document provides detailed specifications for the 8-speed dual-clutch transmission (8G-DCT) used in the 2019-Present Mercedes CLA. It includes technical details such as gear ratios, torque capacity, shift response times, and transmission control systems. These specifications are essential for understanding the performance, maintenance, and repair of the transmission. The information is valuable for automotive technicians, enthusiasts, and owners who seek to optimize the vehicle's performance or troubleshoot transmission-related issues. Additionally, it covers compatibility with different CLA models and highlights key features like smooth shifting and fuel efficiency. This comprehensive guide serves as a reliable reference for anyone working with or owning a Mercedes CLA equipped with the 8G-DCT transmission.
Overview Specifications
This document provides detailed specifications and technical insights into the 8G-DCT transmission system used in the 2019-Present Mercedes CLA. It is designed to assist users in understanding the transmission's features, performance, and maintenance. Use the search functionality to locate specific terms or navigate through sections to explore comprehensive details about the transmission system.
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Key Specifications
Transmission Type
8-Speed Dual-Clutch
Max Torque
400 Nm
Shift Speed
200 ms
Fuel Efficiency
7.0 L/100km
Weight
85 kg
Available Specifications
Transmission Design
This section covers the design principles and engineering behind the 8G-DCT transmission, focusing on its dual-clutch architecture and gear configuration.
Transmission Design
This section covers the design principles and engineering behind the 8G-DCT transmission, focusing on its dual-clutch architecture and gear configuration.
Dual-Clutch System
- Utilizes two separate clutches for odd and even gears
- Enables seamless gear shifts without power interruption
- Optimizes fuel efficiency and performance
- Designed for high torque handling
- Compact and lightweight construction
Gear Configuration
- 8-speed gearbox for enhanced driving dynamics
- Wide gear ratio spread for improved efficiency
- Adaptive shift strategy based on driving conditions
- Integrated cooling system for durability
- Precision-engineered gear components
Performance Features
Explore the performance-enhancing features of the 8G-DCT transmission, including its responsiveness, efficiency, and integration with Mercedes' driving modes.
Performance Features
Explore the performance-enhancing features of the 8G-DCT transmission, including its responsiveness, efficiency, and integration with Mercedes' driving modes.
Shift Speed and Responsiveness
- Ultra-fast gear changes in milliseconds
- Enhanced acceleration and smoothness
- Reduced shift times compared to traditional automatics
- Adaptive learning for driver behavior
- Sport and manual mode options
Efficiency and Fuel Economy
- Optimized gear ratios for reduced fuel consumption
- Eco mode for enhanced efficiency
- Reduced friction losses in transmission components
- Start-stop system integration
- Low emissions compliance
Maintenance and Durability
This section provides insights into the maintenance requirements and durability features of the 8G-DCT transmission, ensuring long-term reliability.
Maintenance and Durability
This section provides insights into the maintenance requirements and durability features of the 8G-DCT transmission, ensuring long-term reliability.
Maintenance Schedule
- Regular oil changes at specified intervals
- Inspection of clutch and gear components
- Software updates for optimal performance
- Diagnostic checks for early issue detection
- Recommended service intervals provided
Durability Features
- High-strength materials for critical components
- Robust cooling system for thermal management
- Sealed design to prevent contamination
- Extended lifespan under normal operating conditions
- Warranty coverage for transmission system
Search Specifications
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Transmission Specifications
Overview
- Type
- Dual-Clutch Transmission
- Configuration
- 8-Speed
- Platform
- MFA2
- Material
- Aluminum Alloy
- Location
- Front Transverse
Dimensions
- Length
- 24.8 in (630 mm)
- Width
- 17.7 in (450 mm)
- Height
- 13.8 in (350 mm)
- Weight
- 187.4 lbs (85 kg)
- input Shaft Diameter
- 1.2 in (30 mm)
- Output Shaft Diameter
- 1.4 in (35 mm)
- Fluid Capacity
- 7.4 quarts (7 liters)
Materials
- Housing
- Aluminum Alloy
- Clutch Plates
- Carbon Composite
- Gears
- Case-Hardened Steel
- Shafts
- Forged Steel
- Seals
- Synthetic Rubber
Features
- Performance
-
- Rapid Gear Shifts
- Sport Mode
- Manual Shift Paddles
- Launch Control
- Efficiency
-
- Low Friction Design
- Optimized Gear Ratios
- Eco Mode
- Start-Stop Functionality
- Driving Modes
-
- Comfort
- Sport
- Eco
- Individual
- integration
-
- Seamless Engine Integration
- Adaptive Shift Logic
- Torque Vectoring
- Dynamic Select
- Technology
-
- Electrohydraulic Actuation
- Dual Wet Clutch System
- Advanced Cooling System
- Integrated Control Unit
Safety Features
- Overload Protection
-
- Torque Limiter
- Thermal Management
- Failure Prevention
-
- Redundant Sensors
- Self-Diagnostic System
- Emergency
-
- Fail-Safe Mode
- Manual Override
Comfort Features
- Noise Reduction
-
- Sound Insulation
- Precision Machining
- Smoothness
-
- Adaptive Shift Mapping
- Torque Smoothing
- Convenience
-
- Automatic Shift
- Hill Start Assist
- Customization
-
- Adjustable Shift Speed
- Personalized Driving Modes
Accessories
- installation
-
- Mounting Brackets
- Alignment Tools
- Fluid Pumps
- Upgrades
-
- Performance Clutch Kits
- Enhanced Cooling Systems
- Custom Shift Paddles
- Maintenance
-
- Transmission Fluid
- Filter Kits
- Seal Replacement Kits
Maintenance
- Service interval
- Every 40,000 miles or 48 months
- Service Items
-
- Fluid Replacement
- Filter Replacement
- Clutch Inspection
- Solenoid Check
- Software Update
- Notes
- Use only Mercedes-Benz approved transmission fluid
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Parts and Labor
- Powertrain
- Miles: 100,000Years: 7Coverage: Transmission Components
- Corrosion
- Miles: UnlimitedYears: 12Coverage: Perforation Only
- Roadside Assistance
- Miles: UnlimitedYears: 4Coverage: 24/7 Support
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision Casting
- CNC Machining
- Automated Assembly
- Quality Testing
- Quality Control
- Testing: Durability Tests, Performance Benchmarks, Software ValidationStandards: ISO 9001, ISO 14001, ISO 45001
- Sustainability
-
- Recycled Materials
- Energy-Efficient Production
- Waste Reduction Programs
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: < 0.1%Lead Time: 3 weeks
Service Information for 8g dct transmission Service
Maintenance and service requirements specific to this component
- Transmission Fluid Replacement
- Filter Replacement
- Clutch Inspection
- Solenoid Check
- Software Update
Use only Mercedes-Benz approved transmission fluid
- Comprehensive Fluid Flush
- Clutch Pack Inspection
- Seal Replacement
- Control Unit Diagnostics
- Performance Testing
Requires specialized diagnostic equipment
- Transmission Overhaul
- Clutch Replacement
- Shaft Bearing Inspection
- Full System Diagnostics
- Cooling System Check
Major service requires certified technician
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 8G-DCT transmission compatible with all 2019-Present Mercedes CLA models?
Is the 8G-DCT transmission compatible with all 2019-Present Mercedes CLA models?
The 8G-DCT transmission is specifically designed for the 2019-Present Mercedes CLA 250 and CLA 35 AMG models. It is not compatible with other variants or older models due to differences in engine specifications and mounting points. Ensure your vehicle’s VIN is verified for compatibility before installation or upgrades.
Q2 What are the maintenance requirements for the 8G-DCT transmission?
What are the maintenance requirements for the 8G-DCT transmission?
The 8G-DCT transmission requires regular maintenance every 40,000 miles or 4 years, whichever comes first. This includes fluid and filter replacement, software updates, and inspection of clutch packs and seals. Always use Mercedes-approved transmission fluids and follow the manufacturer’s maintenance schedule to ensure optimal performance and longevity.
Q3 How do I install or replace the 8G-DCT transmission in a Mercedes CLA?
How do I install or replace the 8G-DCT transmission in a Mercedes CLA?
Replacing the 8G-DCT transmission involves disconnecting the battery, removing the subframe, detaching the driveshaft, and unbolting the transmission. Installation requires aligning the new transmission, reconnecting components, and performing a calibration using Mercedes diagnostic tools. Professional installation is recommended due to the complexity and precision required.
Q4 What should I do if my 8G-DCT transmission is malfunctioning?
What should I do if my 8G-DCT transmission is malfunctioning?
Common issues include rough shifting, delayed engagement, or warning lights. First, check the transmission fluid level and condition. If fluid is low or contaminated, top up or replace it. Use a diagnostic tool to scan for error codes. For persistent issues, consult a Mercedes-certified technician for further diagnosis and repair.
Q5 How can I optimize the performance of my 8G-DCT transmission?
How can I optimize the performance of my 8G-DCT transmission?
To optimize performance, ensure regular maintenance, use high-quality transmission fluid, and keep the software updated. Avoid aggressive driving habits that stress the transmission. Consider a performance tune for faster shifts and improved responsiveness. Always consult a professional before making modifications to ensure compatibility and safety.
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 CLA 8G-DCT Service Manual
Coming SoonThis manual provides detailed instructions for servicing the 8G-DCT transmission, including fluid changes, software updates, and troubleshooting.
8G-DCT Transmission Technical Bulletin
Coming SoonThis bulletin outlines common issues, software updates, and recommended fixes for the 8G-DCT transmission in Mercedes CLA models.
Mercedes CLA Transmission Parts Catalog
Coming SoonThis catalog lists all compatible parts and accessories for the 8G-DCT transmission, including OEM and aftermarket options.
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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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