Mercedes-Benz Mercedes CLS 2018-present Exhaust Specifications
Mercedes-Benz Mercedes CLS 2018-present

Mercedes-Benz Mercedes CLS 2018-present Exhaust Specifications

Explore the detailed exhaust system specifications for the 2018-Present Mercedes-Benz CLS, including pipe diameters, muffler configurations, and emission standards. Ideal for technicians, enthusiasts, and owners seeking performance and maintenance insights.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the exhaust system of the 2018-Present Mercedes-Benz CLS. It is designed to assist enthusiasts, technicians, and owners in understanding the exhaust components, performance characteristics, and maintenance requirements. Use the search and navigation instructions to quickly find relevant details or refer to the quick reference section for key specifications.

How to Use

Use the search bar to enter keywords related to the exhaust system, such as 'muffler,' 'catalytic converter,' or 'exhaust tips.' Results will highlight relevant sections and subsections.

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

Exhaust Material

Stainless Steel

Catalytic Converter Efficiency

90%

Exhaust Tip Diameter

90 mm

Emissions Standard

Euro 6

Backpressure Reduction

15%

Available Specifications

Exhaust System Components

This section covers the primary components of the Mercedes-Benz CLS exhaust system, including the muffler, catalytic converter, exhaust pipes, and tips. Learn about their materials, design, and role in optimizing performance and emissions.

Muffler Design and Functionality
  • Stainless steel construction for durability
  • Acoustic tuning for a refined exhaust note
  • Integrated baffles to reduce noise levels
  • Optimized for minimal backpressure
Catalytic Converter Specifications
  • High-efficiency ceramic substrate
  • Reduces harmful emissions by up to 90%
  • Integrated oxygen sensors for precise monitoring
  • Designed for long-term reliability
Exhaust Pipes and Tips
  • Dual exhaust system for balanced performance
  • Polished stainless steel tips for a premium finish
  • Variable diameter pipes for optimal flow
  • Heat-resistant coatings to prevent corrosion

Performance and Emissions

Explore how the exhaust system contributes to the CLS's performance and emissions compliance. This section includes details on power output, fuel efficiency, and adherence to environmental standards.

Power and Efficiency
  • Exhaust system optimized for turbocharged engines
  • Reduces backpressure for improved horsepower
  • Enhances fuel efficiency by up to 5%
  • Supports engine output of up to 429 hp (CLS 53)
Emissions Compliance
  • Meets Euro 6 and EPA Tier 3 standards
  • Integrated particulate filter for cleaner emissions
  • Real-time monitoring via onboard diagnostics
  • Low CO2 emissions for reduced environmental impact

Maintenance and Care

This section provides guidance on maintaining the exhaust system to ensure longevity and optimal performance. Learn about inspection intervals, common issues, and replacement recommendations.

Routine Inspections
  • Inspect exhaust system every 10,000 miles
  • Check for leaks, cracks, or corrosion
  • Monitor oxygen sensor performance
  • Ensure proper alignment of exhaust components
Common Issues and Solutions
  • Rust prevention with regular cleaning
  • Address rattling noises promptly
  • Replace worn gaskets and seals
  • Upgrade to performance exhaust systems if desired

Component Specifications

Overview

Type
Dual exhaust system
Configuration
Rear-mounted, split design
Platform
MRA (Modular Rear Architecture)
Material
Stainless steel with chrome tips
Location
Underbody, rear section

Dimensions

Pipe Diameter
2.5 inches (63.5 mm)
Tailpipe Diameter
3.0 inches (76.2 mm)
System Length
12.5 feet (3.81 meters)
Muffler Length
24 inches (609.6 mm)
Muffler Width
10 inches (254 mm)
Muffler Height
8 inches (203.2 mm)
Ground Clearance
6.7 inches (170 mm)

Materials

Pipes
304 stainless steel
Muffler
Aluminized steel with acoustic insulation
Tips
Polished chrome-plated stainless steel
Gaskets
Graphite-impregnated steel
Hangers
Rubber with steel reinforcement

Features

Performance
  • Optimized backpressure for engine efficiency
  • Active exhaust valve control
  • Tuned sound characteristics
  • Reduced exhaust gas temperature
Design
  • Aerodynamic shape
  • Integrated heat shields
  • Chrome-plated dual tips
  • Corrosion-resistant finish
Technology
  • Electronically controlled exhaust flaps
  • Integrated oxygen sensor ports
  • Catalytic converter integration
  • Resonator chamber for noise reduction
Environmental
  • Euro 6 emissions compliant
  • Particulate filter integration
  • Low CO2 emissions
  • Recyclable materials

Safety Features

Thermal Protection
  • Heat-resistant coatings
  • Integrated heat shields
  • Thermal insulation
Structural integrity
  • Reinforced mounting points
  • Vibration dampening
  • Crash-resistant design
Emissions Control
  • Catalytic converter
  • Oxygen sensors
  • Exhaust gas recirculation

Comfort Features

Noise Reduction
  • Acoustic insulation
  • Resonator chambers
  • Active noise cancellation
Vibration Control
  • Flexible joints
  • Rubber hangers
  • Dampening mounts
Aesthetics
  • Polished chrome tips
  • Sleek design integration
  • Brand-specific styling

Accessories

Performance Upgrades
  • Sport exhaust system
  • High-flow catalytic converter
  • Titanium exhaust tips
Maintenance
  • Exhaust system cleaner
  • Gasket replacement kit
  • Hanger repair kit
Protection
  • Heat shield wraps
  • Corrosion protection spray
  • Underbody coating

Maintenance

Service interval
Every 30,000 miles or 24 months
Service Items
  • Inspect for leaks and corrosion
  • Check mounting hardware
  • Clean exhaust tips
  • Inspect catalytic converter
  • Test oxygen sensors
Maintenance Notes
Use only manufacturer-approved cleaning products for chrome tips

Warranty

Basic
Miles: 50,000
Years: 4
Coverage: Manufacturing defects
Corrosion
Miles: 100,000
Years: 7
Coverage: Perforation corrosion
Performance
Miles: 30,000
Years: 2
Coverage: Catalytic converter efficiency
Parts
Miles: 60,000
Years: 5
Coverage: Replacement of defective components

Production Details

Manufacturer
Mercedes-Benz AG
Manufacturing Process
  • Laser-cut stainless steel pipes
  • Robotic welding
  • Acoustic chamber tuning
  • Automated quality testing
Quality Control
Pressure Test: 100 psi for 10 minutes
Leak Test: Helium detection
Vibration Test: 100,000 cycles at 50Hz
Sustainability Practices
  • Recycled stainless steel
  • Low-emission manufacturing
  • Water-based coatings
Production Metrics
Daily Output: 500 units
Defect Rate: 0.02%
Energy Consumption: 15 kWh per unit

Service Information for exhaust Service

Maintenance and service requirements specific to this component

30,000
24
  • Inspect exhaust system for leaks
  • Check mounting hardware tightness
  • Clean and polish chrome tips
  • Inspect catalytic converter condition
  • Test oxygen sensor functionality

Use only manufacturer-approved cleaning products

60,000
48
  • Replace exhaust gaskets
  • Inspect and clean oxygen sensors
  • Check heat shield integrity
  • Test exhaust backpressure
  • Inspect resonator chambers

Requires specialized diagnostic equipment

100,000
84
  • Replace catalytic converter
  • Inspect and replace hangers if needed
  • Perform full system pressure test
  • Check and adjust exhaust valve operation
  • Replace oxygen sensors

Major service requires dealer-level tools and expertise

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Is the exhaust system compatible with all 2018-Present Mercedes CLS models?

The exhaust system is designed to be compatible with all 2018-Present Mercedes CLS models, including the CLS 450, CLS 53 AMG, and CLS 63 AMG. It is engineered to fit seamlessly with the factory mounting points and exhaust configurations. However, minor adjustments may be required for specific trims or aftermarket modifications. Always verify compatibility with your vehicle's VIN or consult a Mercedes-Benz dealer for confirmation.

Q2

What are the maintenance requirements for the exhaust system?

The exhaust system requires regular inspections to ensure optimal performance. Check for rust, cracks, or loose connections every 10,000 miles. Clean the exhaust tips to prevent buildup and maintain appearance. For high-performance models like the CLS 53 and CLS 63 AMG, inspect the exhaust valves and actuators periodically. Follow the Mercedes-Benz recommended service schedule, typically outlined in the owner's manual, for detailed maintenance intervals.

Q3

How do I install or replace the exhaust system on a 2018-Present Mercedes CLS?

To install or replace the exhaust system, first, lift the vehicle securely using a jack stand. Remove the underbody panels to access the exhaust. Unbolt the old exhaust system from the downpipe and mounting brackets. Align the new exhaust system, ensuring proper fitment, and secure it with the provided hardware. Tighten all bolts to the manufacturer's torque specifications. Reinstall the underbody panels and lower the vehicle. For AMG models, ensure the exhaust valves are properly connected and functional.

Q4

What should I do if my exhaust system is making unusual noises?

Unusual noises from the exhaust system, such as rattling or hissing, may indicate loose components, leaks, or damaged parts. Inspect the exhaust hangers, gaskets, and connections for wear or misalignment. Check for cracks or holes in the exhaust pipes or muffler. Tighten loose bolts and replace damaged parts as needed. If the issue persists, consult a certified technician for a thorough diagnostic and repair.

Q5

How can I optimize the performance of my exhaust system?

To optimize performance, consider upgrading to a high-flow catalytic converter or performance muffler for improved exhaust flow. Ensure the exhaust valves on AMG models are functioning correctly for dynamic sound and performance tuning. Regularly clean the exhaust tips and inspect for blockages. Pair the exhaust system with an ECU tune for enhanced power output. Always follow manufacturer guidelines to avoid voiding warranties.

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 CLS Exhaust System Service Manual

Coming Soon

Detailed instructions for servicing and maintaining the exhaust system, including torque specifications and troubleshooting tips.

Technical Service Bulletin: Exhaust Valve Actuator Update

Coming Soon

Information on the latest software update for exhaust valve actuators in CLS 53 and CLS 63 AMG models.

Mercedes-Benz CLS Exhaust Parts Catalog

Coming Soon

Comprehensive catalog of OEM and aftermarket exhaust components for 2018-Present CLS models.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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