Mercedes-Benz Mercedes M-Class 2005-2011 3.5L V6 Engine Specifications
Explore detailed technical specifications for the 3.5L V6 engine in the 2005-2011 Mercedes M-Class. Learn about performance, maintenance, and repair tips for this reliable engine.
Overview Specifications
This document provides detailed specifications and technical information about the 3.5L V6 engine used in the 2005-2011 Mercedes-Benz M-Class. It is designed for enthusiasts, mechanics, and owners seeking in-depth knowledge about the engine's performance, design, and maintenance. Use the search and navigation instructions to quickly find relevant sections or refer to the quick reference table for key specifications.
How to Use
Use the search bar to enter keywords related to the 3.5L V6 engine, such as 'horsepower' or 'torque'. Results will highlight relevant sections and subsections for easy 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
Displacement
3.5L
Horsepower
268 HP
Torque
258 lb-ft
Fuel Type
Premium Unleaded
Compression Ratio
10.7:1
Available Specifications
Engine Performance
This section covers the performance metrics of the 3.5L V6 engine, including horsepower, torque, and acceleration. It also includes details on fuel efficiency and emissions standards for the 2005-2011 M-Class models.
Engine Performance
This section covers the performance metrics of the 3.5L V6 engine, including horsepower, torque, and acceleration. It also includes details on fuel efficiency and emissions standards for the 2005-2011 M-Class models.
Power Output
- 268 horsepower at 6,000 RPM
- 258 lb-ft of torque at 2,400-5,000 RPM
- 0-60 mph acceleration in 7.0 seconds
- Top speed electronically limited to 130 mph
Fuel Efficiency
- 15 mpg city
- 20 mpg highway
- 17 mpg combined
- Meets Euro 4 emissions standards
Engine Design
This section delves into the engineering and design features of the 3.5L V6 engine, including its construction, materials, and advanced technologies.
Engine Design
This section delves into the engineering and design features of the 3.5L V6 engine, including its construction, materials, and advanced technologies.
Construction
- Aluminum alloy block and cylinder heads
- DOHC (Dual Overhead Camshaft) design
- 24-valve configuration
- Variable valve timing (VVT)
Advanced Features
- Multi-spark ignition system
- Electronic throttle control
- Integrated oil cooler
- Hydraulic engine mounts for reduced vibration
Maintenance and Reliability
This section provides information on maintenance schedules, common issues, and reliability ratings for the 3.5L V6 engine in the 2005-2011 M-Class.
Maintenance and Reliability
This section provides information on maintenance schedules, common issues, and reliability ratings for the 3.5L V6 engine in the 2005-2011 M-Class.
Maintenance Schedule
- Oil change every 10,000 miles or 12 months
- Spark plug replacement every 60,000 miles
- Timing chain inspection at 100,000 miles
- Coolant flush every 50,000 miles
Common Issues
- Oil leaks from valve cover gaskets
- Timing chain tensioner wear over time
- Occasional misfires due to coil pack failure
- Carbon buildup on intake valves
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Engine Specifications
Overview
- Type
- Gasoline V6
- Configuration
- 60-degree V-angle
- Platform
- M272 engine series
- Material
- Aluminum block and heads
- Location
- Front longitudinal
Dimensions
- Length
- 24.8 in (630 mm)
- Width
- 28.3 in (720 mm)
- Height
- 27.6 in (700 mm)
- Displacement
- 213.5 cu in (3498 cc)
- Bore
- 3.7 in (92.9 mm)
- Stroke
- 3.3 in (86.0 mm)
- Weight
- 375 lbs (170 kg)
Materials
- Engine Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Stainless steel
Features
- Fuel System
-
- Sequential multi-port fuel injection
- Electronic throttle control
- Variable intake manifold
- Ignition System
-
- Direct ignition system
- Individual coil-on-plug
- Knock control system
- Cooling System
-
- Cross-flow cooling
- Electric cooling fan
- Thermostatically controlled
- Emissions
-
- Dual catalytic converters
- Exhaust gas recirculation
- Oxygen sensors
- Performance
-
- Variable valve timing
- Balancer shaft
- High-flow intake
Safety Features
- Engine Protection
-
- Low oil pressure shutdown
- Overheat protection
- Knock sensor protection
- Electronic Controls
-
- Engine control unit (ECU)
- Traction control integration
- Stability control integration
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Balancer shaft for vibration reduction
- Climate Control
-
- Auxiliary heater integration
- Automatic climate control support
- Driving Modes
-
- Eco mode
- Sport mode
- Comfort mode
Accessories
- Engine Bay
-
- Acoustic cover
- Engine bay lighting
- Diagnostic port
- Cooling
-
- Auxiliary radiator
- Transmission cooler
- Power steering cooler
- Electrical
-
- High-output alternator
- Dual battery support
- Integrated starter-generator
Maintenance
- Service interval
- 10,000 miles or 12 months
- Service Items
-
- Oil and filter change
- Spark plug replacement
- Air filter replacement
- 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
-
- Casting
- CNC machining
- Assembly line production
- Quality Control
- Testing: Cold testing, Hot testing, Dyno testinginspection: Dimensional checks, Leak testing, Final visual inspection
- Sustainability
-
- Recycled aluminum usage
- Low-emission painting process
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.01%Energy Consumption: 150 kWh per engine
Service Information for 3.5l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Tire rotation
- Brake inspection
- Fluid level checks
- Battery inspection
Use only Mercedes-Benz approved oil and filters
- Air filter replacement
- Cabin air filter replacement
- Spark plug inspection
- Fuel system inspection
- Coolant system check
Inspect timing chain and tensioners
- Spark plug replacement
- Transmission fluid change
- Coolant flush
- Brake fluid flush
- Timing chain inspection
Major service interval - requires dealer-level tools
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 3.5L V6 engine compatible with other Mercedes-Benz models?
Is the 3.5L V6 engine compatible with other Mercedes-Benz models?
The 3.5L V6 engine, used in the 2005-2011 Mercedes M-Class, is specifically designed for this model and its variants. While it shares some design elements with other Mercedes-Benz engines, direct compatibility with other models is limited. Always verify with a Mercedes-Benz dealer or technical expert before attempting cross-model installations.
Q2 What are the maintenance requirements for the 3.5L V6 engine?
What are the maintenance requirements for the 3.5L V6 engine?
The 3.5L V6 engine requires regular maintenance, including oil changes every 10,000 miles or annually, air filter replacement every 30,000 miles, and spark plug replacement every 60,000 miles. Additionally, inspect the timing chain and coolant system periodically to ensure optimal performance and longevity.
Q3 How do I replace the 3.5L V6 engine in a 2005-2011 Mercedes M-Class?
How do I replace the 3.5L V6 engine in a 2005-2011 Mercedes M-Class?
Replacing the 3.5L V6 engine involves disconnecting the battery, draining fluids, removing the intake and exhaust systems, detaching the transmission, and unbolting the engine mounts. Use a hoist to lift the engine out. Installation is the reverse process. Ensure all connections are secure and follow the torque specifications in the service manual.
Q4 What should I do if the 3.5L V6 engine is misfiring?
What should I do if the 3.5L V6 engine is misfiring?
If the engine is misfiring, check the spark plugs, ignition coils, and fuel injectors for faults. Use an OBD-II scanner to identify specific error codes. Replace faulty components and ensure the fuel system is clean. If the issue persists, inspect the engine's compression and timing chain for potential problems.
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, upgrade the air intake system, and install a performance exhaust. Regularly clean the fuel injectors and throttle body. Consider reprogramming the ECU for improved fuel mapping and throttle response. Always adhere to the manufacturer's 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 M-Class 2005-2011 Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 3.5L V6 engine and other components.
Technical Service Bulletin for 3.5L V6 Engine Updates
Coming SoonDetails software updates, recalls, and technical fixes for the 3.5L V6 engine in the 2005-2011 M-Class.
Mercedes M-Class Parts and Accessories Catalog
Coming SoonComplete catalog of OEM and aftermarket parts for the 2005-2011 M-Class, including the 3.5L V6 engine.
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.