Mercedes-Benz Mercedes SLK 2011-2016 3.5L V6 Engine Specifications
Explore the detailed technical specifications of the 3.5L V6 engine in the 2011-2016 Mercedes SLK. Learn about performance metrics, maintenance tips, and compatibility for repairs and upgrades. Ideal for owners and technicians.
Overview Specifications
This document provides detailed specifications and technical information about the 3.5L V6 engine used in the 2011-2016 Mercedes SLK. It is designed to help enthusiasts, mechanics, and owners understand the engine's features, performance, and maintenance requirements. Use the search functionality to locate specific details or navigate through the sections for a comprehensive understanding of the engine.
How to Use
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Scroll through the sections to explore different aspects of the engine. Each section is organized into subsections, making it easy to find detailed information on specific topics.
Key Specifications
Displacement
3.5 liters
Horsepower
302 hp
Torque
273 lb-ft
Compression Ratio
12.0:1
Fuel Type
Premium unleaded
Available Specifications
Engine Performance
This section covers the performance characteristics of the 3.5L V6 engine, including horsepower, torque, and acceleration. It also provides insights into the engine's efficiency and driving dynamics.
Engine Performance
This section covers the performance characteristics of the 3.5L V6 engine, including horsepower, torque, and acceleration. It also provides insights into the engine's efficiency and driving dynamics.
Power and Torque
- 302 horsepower at 6500 rpm
- 273 lb-ft of torque at 3500 rpm
- 0-60 mph in 5.4 seconds
- Top speed electronically limited to 155 mph
Fuel Efficiency
- EPA-estimated 19 mpg city
- EPA-estimated 28 mpg highway
- Direct injection technology
- Start-stop system for improved efficiency
Engine Design
This section delves into the design features of the 3.5L V6 engine, including its construction, materials, and innovative technologies that enhance performance and durability.
Engine Design
This section delves into the design features of the 3.5L V6 engine, including its construction, materials, and innovative technologies that enhance performance and durability.
Construction
- Aluminum block and cylinder heads
- DOHC (Double Overhead Camshaft) design
- Four valves per cylinder
- Forged steel crankshaft
Innovative Technologies
- Variable valve timing (CAMTRONIC)
- Direct fuel injection system
- Lightweight components for reduced weight
- Optimized airflow for improved combustion
Maintenance and Reliability
This section provides guidance on maintaining the 3.5L V6 engine, including recommended service intervals, common issues, and tips for ensuring long-term reliability.
Maintenance and Reliability
This section provides guidance on maintaining the 3.5L V6 engine, including recommended service intervals, common issues, and tips for ensuring long-term reliability.
Service Intervals
- Oil change every 10,000 miles or 12 months
- Spark plug replacement every 60,000 miles
- Air filter replacement every 30,000 miles
- Coolant flush every 100,000 miles
Common Issues
- Carbon buildup on intake valves
- Potential for oil leaks in older models
- Timing chain wear over time
- Regular inspection of engine mounts recommended
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Engine Specifications
Overview
- Type
- Naturally aspirated V6
- Configuration
- 60-degree V angle
- Platform
- M276 DE35
- Material
- Aluminum alloy block and heads
- Location
- Front longitudinal
Dimensions
- Length
- 24.8 in (630 mm)
- Width
- 29.1 in (740 mm)
- Height
- 27.6 in (700 mm)
- Weight
- 375 lbs (170 kg)
- Displacement
- 3498 cc (3.5 liters)
- Bore
- 92.9 mm (3.66 in)
- Stroke
- 86 mm (3.39 in)
- Compression Ratio
- 12.0:1
Materials
- Block
- Aluminum-silicon alloy
- Cylinder Head
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Hollow sodium-filled
Features
- Fuel System
-
- Direct injection
- High-pressure fuel pump
- Multi-spark ignition
- Variable valve timing
- Cooling System
-
- Dual-circuit cooling
- Electronic thermostat
- Variable-speed water pump
- Lubrication
-
- Dry sump system
- Variable oil pump
- Oil cooler
- Emissions
-
- Catalytic converters
- Secondary air injection
- EGR system
- Performance
-
- 306 hp @ 6500 rpm
- 273 lb-ft torque @ 3500 rpm
- Redline: 7000 rpm
- Electronics
-
- ECU controlled
- CAN bus communication
- Adaptive engine mapping
Safety Features
- Engine Protection
-
- Knock sensor system
- Overheat protection
- Low oil pressure warning
- Shutdown Systems
-
- Emergency fuel cutoff
- Automatic limp mode
- Over-rev protection
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Balanced rotating assembly
- Hydraulic engine mounts
- Smooth Operation
-
- Dual-mass flywheel
- Counter-rotating balancer shaft
- Variable intake manifold
Accessories
- Engine Components
-
- Alternator 150A
- Starter motor 1.7 kW
- Air conditioning compressor
- Cooling System
-
- Radiator with dual fans
- Intercooler
- Expansion tank
- Exhaust System
-
- Stainless steel headers
- Catalytic converters
- Twin exhaust pipes
Maintenance
- Service interval
- 10,000 miles or 12 months
- Service Items
-
- Oil and filter change
- Spark plug replacement
- Air filter replacement
- Drive belt inspection
- Coolant flush
- Throttle body cleaning
- Maintenance Notes
- Use only Mercedes-approved 5W-40 synthetic oil
Warranty
- Basic
- 4 years/50,000 miles
- Powertrain
- 5 years/62,000 miles
- Emissions
- 8 years/80,000 miles
- Corrosion
- 12 years/unlimited miles
- Warranty Terms
- Transferable with vehicle ownership
Production Details
- Manufacturer
- Mercedes-Benz
- Manufacturing Process
-
- Precision casting
- CNC machining
- Robotic assembly
- Quality Control
- Engine Testing: Hot and cold testingLeak Testing: Air and fluid pressure testsPerformance Verification: Dyno testing
- Sustainability
-
- Recycled aluminum content
- Low-emission manufacturing
- Closed-loop water system
- Production Metrics
- Daily Output: 120 unitsDefect Rate: < 0.1%Energy Usage: 120 kWh per engine
Service Information for 3.5l v6 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Air filter inspection
- Spark plug inspection
- Belt tension check
- Coolant level verification
- Engine diagnostics scan
Use only MB229.5 approved oil
- Fuel filter replacement
- Throttle body cleaning
- PCV valve inspection
- Engine mount inspection
- Coolant system pressure test
Check for oil leaks and consumption
- Spark plug replacement
- Drive belt replacement
- Coolant flush
- Valve adjustment check
- Compression test
- Injector cleaning
Perform full engine diagnostic scan
Common Questions
Find answers to common questions about torque specifications
Q1 What vehicles is the 3.5L V6 engine compatible with?
What vehicles is the 3.5L V6 engine compatible with?
The 3.5L V6 engine is specifically designed for the 2011-2016 Mercedes SLK models, including the SLK 350. It is not compatible with other vehicle models or earlier versions of the SLK without significant modifications. The engine features a 3498 cc displacement, direct injection, and a power output of 302 hp, ensuring optimal performance for this specific model range.
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, whichever comes first. Spark plugs should be replaced every 60,000 miles, while the timing chain is designed to last the lifetime of the engine but should be inspected every 100,000 miles. Air filters should be checked every 20,000 miles, and coolant replacement is recommended every 40,000 miles to ensure optimal engine performance and longevity.
Q3 How do I replace the 3.5L V6 engine in a 2011-2016 SLK?
How do I replace the 3.5L V6 engine in a 2011-2016 SLK?
Replacing the 3.5L V6 engine requires professional expertise. Begin by disconnecting the battery and draining fluids. Remove the intake manifold, exhaust system, and electrical connections. Support the engine with a hoist, detach the mounts, and carefully lift it out. Install the new engine by reversing the steps, ensuring all connections are secure. Torque bolts to manufacturer specifications and refill fluids. A professional mechanic is recommended for this complex procedure.
Q4 What are common troubleshooting steps for the 3.5L V6 engine?
What are common troubleshooting steps for the 3.5L V6 engine?
If the 3.5L V6 engine experiences issues, start by checking for error codes using an OBD-II scanner. Common problems include misfires, which may be caused by faulty spark plugs or ignition coils. Low power or hesitation could indicate clogged fuel injectors or a failing fuel pump. Unusual noises may point to timing chain or valve train issues. Always refer to the service manual for specific diagnostic procedures and solutions.
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 the 3.5L V6 engine, use high-quality synthetic oil and ensure regular maintenance. Upgrading to performance air filters and exhaust systems can improve airflow and power. ECU tuning can enhance throttle response and horsepower. Avoid aggressive driving to reduce wear and tear. Regularly inspect and clean components like the throttle body and fuel injectors to 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 SLK 350 Service Manual
Coming SoonThis comprehensive manual covers all aspects of the 3.5L V6 engine, including maintenance, troubleshooting, and repair procedures.
Technical Service Bulletin for 3.5L V6 Engine
Coming SoonThis bulletin provides updates and fixes for common issues identified in the 3.5L V6 engine, including software updates and component replacements.
Mercedes SLK 350 Parts Catalog
Coming SoonA detailed catalog listing all OEM parts and accessories for the 3.5L V6 engine, including part numbers and compatibility information.
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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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