Mercedes-Benz Mercedes CLS 2004-2010 3.5L V6 Engine Specifications
Explore detailed technical specifications for the 3.5L V6 engine in the 2004-2010 Mercedes CLS. Learn about horsepower, torque, fuel systems, and more for maintenance, repair, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the 3.5L V6 engine used in the 2004-2010 Mercedes-Benz CLS. It is designed for enthusiasts, mechanics, and owners seeking in-depth knowledge about the engine's performance, design, and maintenance. Use the search functionality to locate specific details or navigate through sections for a comprehensive understanding of the engine's features and capabilities.
How to Use
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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
Displacement
3.5L
Horsepower
268 hp
Torque
258 lb-ft
Fuel Efficiency
18/25 mpg
Top Speed
155 mph
Available Specifications
Engine Performance
This section covers the performance metrics of the 3.5L V6 engine, including horsepower, torque, and acceleration. It also highlights the engine's responsiveness and efficiency, making it a standout feature in the 2004-2010 Mercedes-Benz CLS.
Engine Performance
This section covers the performance metrics of the 3.5L V6 engine, including horsepower, torque, and acceleration. It also highlights the engine's responsiveness and efficiency, making it a standout feature in the 2004-2010 Mercedes-Benz CLS.
Power Output
- Horsepower: 268 hp at 6000 rpm
- Torque: 258 lb-ft at 2400-5000 rpm
- 0-60 mph acceleration: 6.7 seconds
- Top speed: 155 mph (electronically limited)
- Fuel efficiency: 18 mpg city / 25 mpg highway
- Engine redline: 6500 rpm
Engine Responsiveness
- Smooth power delivery across the rev range
- Advanced variable valve timing for optimal performance
- Quick throttle response for spirited driving
- Balanced engine design for reduced vibrations
Engine Design
This section delves into the engineering and design aspects of the 3.5L V6 engine. It highlights the materials, construction, and technologies used to ensure durability, efficiency, and performance.
Engine Design
This section delves into the engineering and design aspects of the 3.5L V6 engine. It highlights the materials, construction, and technologies used to ensure durability, efficiency, and performance.
Construction and Materials
- Aluminum alloy block and cylinder heads
- DOHC (Dual Overhead Camshaft) design
- Forged steel crankshaft for durability
- Lightweight pistons for improved efficiency
Advanced Technologies
- Variable valve timing (VVT) for optimized performance
- Multi-spark ignition system for efficient combustion
- Electronic throttle control for precise power delivery
- Integrated oil cooler for thermal management
Maintenance and Reliability
This section provides insights into the maintenance requirements and reliability of the 3.5L V6 engine. It includes recommended service intervals, common issues, and tips for ensuring long-term performance.
Maintenance and Reliability
This section provides insights into the maintenance requirements and reliability of the 3.5L V6 engine. It includes recommended service intervals, common issues, and tips for ensuring long-term performance.
Service Intervals
- Oil change: Every 10,000 miles or 12 months
- Spark plug replacement: Every 60,000 miles
- Timing chain inspection: Every 100,000 miles
- Coolant flush: Every 50,000 miles
Common Issues
- Oil leaks from valve cover gaskets
- Timing chain tensioner wear over time
- Carbon buildup on intake valves
- Coolant leaks from plastic components
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Engine Specifications
Overview
- Type
- Naturally aspirated V6
- Configuration
- 60-degree V-angle
- Platform
- M272 engine series
- Material
- Aluminum block and heads
- Location
- Front longitudinal
Dimensions
- Length
- 24.8 inches (630 mm)
- Width
- 28.3 inches (720 mm)
- Height
- 27.6 inches (700 mm)
- Displacement
- 3.5 liters (3498 cc)
- Bore
- 3.7 inches (92.9 mm)
- Stroke
- 3.3 inches (86 mm)
- Weight
- 363 lbs (165 kg)
Materials
- Engine Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Stainless steel
Features
- Performance
-
- 272 horsepower at 6000 rpm
- 258 lb-ft torque at 2400-5000 rpm
- Redline at 6500 rpm
- Fuel System
-
- Sequential multi-port fuel injection
- Electronic throttle control
- Variable intake manifold
- Ignition
-
- Direct ignition system
- Platinum-tipped spark plugs
- Coil-on-plug design
- Cooling
-
- High-capacity water pump
- Dual thermostats
- Aluminum radiator
- Emissions
-
- LEV II compliant
- Dual catalytic converters
- Exhaust gas recirculation
Safety Features
- Engine Protection
-
- Knock sensors
- Oil pressure sensor
- Coolant temperature sensor
- Electronic Controls
-
- Engine control unit (ECU)
- Traction control integration
- Stability control integration
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Balanced crankshaft
- Vibration Control
-
- Dual-mass flywheel
- Counter-rotating balance shafts
- Rubber-isolated accessories
Accessories
- Belts And Pulleys
-
- Serpentine belt
- Tensioner pulley
- Idler pulley
- Filters
-
- Oil filter
- Air filter
- Fuel filter
- Sensors
-
- Camshaft position sensor
- Crankshaft position sensor
- Oxygen sensor
Maintenance
- Service interval
- 10,000 miles or 12 months
- Service Items
-
- Oil and filter change
- Spark plug replacement
- Air filter inspection
- Timing chain inspection
- Coolant flush
- Maintenance Notes
- Use only Mercedes-Benz approved fluids and parts
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Bumper-to-bumper
- Powertrain
- Miles: 100,000Years: 7Coverage: Engine and transmission
- Corrosion
- Miles: UnlimitedYears: 10Coverage: Perforation only
- Roadside Assistance
- Miles: UnlimitedYears: 4Coverage: 24/7 assistance
Production Details
- Manufacturer
- Mercedes-Benz
- Manufacturing Process
-
- Precision casting
- CNC machining
- Automated assembly
- Quality Control
- Testing: Cold testing, Hot testing, Dyno testinginspection: Laser measurement, Leak testing, Final visual inspection
- Sustainability Practices
-
- Recycled aluminum
- Low-emission painting
- Waste reduction programs
- Production Metrics
- Units Per Day: 500Defect Rate: <0.1%Energy Usage: 15 kWh per engine
Service Information for 3.5l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect air filter
- Check spark plugs
- Inspect timing chain
- Check coolant level
Use only Mercedes-Benz approved 5W-40 synthetic oil
- Replace spark plugs
- Replace air filter
- Inspect fuel injectors
- Check valve clearance
- Inspect engine mounts
Requires special tools for valve clearance check
- Replace timing chain
- Replace water pump
- Replace serpentine belt
- Flush cooling system
- Inspect cylinder compression
Major service requiring engine hoist and special tools
Common Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the 3.5L V6 engine in the 2004-2010 Mercedes CLS?
What are the technical specifications of the 3.5L V6 engine in the 2004-2010 Mercedes CLS?
The 3.5L V6 engine in the 2004-2010 Mercedes CLS produces 268 horsepower and 258 lb-ft of torque. It features a 24-valve DOHC design, variable valve timing, and a compression ratio of 10.7:1. This engine is compatible with the 7G-TRONIC automatic transmission and meets Euro 4 emission standards. It is designed for premium unleaded gasoline and has a displacement of 3498 cc.
Q2 What are the maintenance requirements for the 3.5L V6 engine?
What are the maintenance requirements for the 3.5L V6 engine?
Regular maintenance for the 3.5L V6 engine includes oil changes every 10,000 miles or annually, using synthetic 5W-40 oil. The air filter should be replaced every 30,000 miles, and the spark plugs every 60,000 miles. Inspect the timing chain and tensioner every 100,000 miles. Coolant should be flushed every 4 years or 50,000 miles. Always follow the manufacturer's service schedule for optimal performance.
Q3 How do I replace the 3.5L V6 engine in a Mercedes CLS?
How do I replace the 3.5L V6 engine in a Mercedes CLS?
Replacing the 3.5L V6 engine requires professional tools and expertise. First, disconnect the battery and drain fluids. Remove the intake manifold, exhaust system, and engine mounts. Use a hoist to lift the engine out. Install the new engine by reversing the steps, ensuring all connections are secure. Torque bolts to manufacturer specifications and refill fluids. Perform a thorough inspection and test run to ensure proper installation.
Q4 What are common troubleshooting steps for the 3.5L V6 engine?
What are common troubleshooting steps for the 3.5L V6 engine?
Common issues include rough idling, reduced power, and check engine lights. Start by scanning for error codes using an OBD-II scanner. Check for vacuum leaks, faulty spark plugs, or clogged fuel injectors. Inspect the MAF sensor and throttle body for dirt or damage. Ensure the fuel pump and filter are functioning correctly. If issues persist, consult a certified technician for advanced diagnostics.
Q5 How can I optimize the performance of the 3.5L V6 engine?
How can I optimize the performance of the 3.5L V6 engine?
To optimize performance, use high-quality synthetic oil and premium fuel. Upgrade the air intake and exhaust systems for better airflow. Regularly clean the throttle body and replace air filters. Consider a performance tune to enhance power and efficiency. Ensure tires are properly inflated and alignment is correct. Avoid aggressive driving to prolong engine life and maintain peak performance.
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 CLS 3.5L V6 Engine Service Manual
Coming SoonDetailed service manual covering maintenance, repair, and troubleshooting for the 3.5L V6 engine.
Technical Service Bulletin for 3.5L V6 Engine Updates
Coming SoonLatest updates and fixes for the 3.5L V6 engine, including software and hardware improvements.
Mercedes CLS 3.5L V6 Parts Catalog
Coming SoonComprehensive catalog of OEM and aftermarket parts for the 3.5L V6 engine, including part numbers and diagrams.
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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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