Mercedes-Benz Mercedes G-Class 1979-2018 5.5L V8 Engine Specifications
Explore the detailed 5.5L V8 engine specifications for the 1979-2018 Mercedes G-Class. Learn about horsepower, torque, fuel systems, and more to maintain, repair, or upgrade your vehicle. A must-read for technicians and enthusiasts.
Overview Specifications
This document provides detailed specifications and technical information about the 5.5L V8 engine used in the Mercedes G-Class from 1979 to 2018. It is designed for enthusiasts, mechanics, and researchers seeking comprehensive insights into the engine's design, performance, and maintenance. Use the search and navigation instructions to locate specific details efficiently. The document is divided into sections covering engine design, performance, maintenance, and key specifications for quick reference.
How to Use
Use the search bar to enter keywords related to the 5.5L V8 engine, such as 'horsepower' or 'torque.' This will highlight relevant sections and subsections. Combine terms for more precise results, e.g., 'engine performance 2010.'
Navigate through the document using the table of contents. Each major section is divided into subsections for easy access. Click on a section title to expand it and view detailed points. Use the 'Quick Reference' section for immediate access to key specifications.
Key Specifications
Displacement
5.5 liters
Horsepower
382-544 HP
Torque
391-560 lb-ft
Fuel Efficiency
13-20 mpg
Emission Standard
Euro 5/6
Available Specifications
Engine Design
This section delves into the architectural and mechanical design of the 5.5L V8 engine. It covers the engine's construction, materials, and innovative features that contribute to its durability and performance.
Engine Design
This section delves into the architectural and mechanical design of the 5.5L V8 engine. It covers the engine's construction, materials, and innovative features that contribute to its durability and performance.
Construction and Materials
- Aluminum alloy block and cylinder heads for reduced weight
- Forged steel crankshaft for enhanced strength
- Double overhead camshaft (DOHC) design
- Variable valve timing for optimized performance
- Direct fuel injection system
- Integrated oil cooler for temperature management
Innovative Features
- ECO start/stop system for improved fuel efficiency
- Variable intake manifold for better airflow
- Electronic engine management system
- Hydraulic engine mounts for reduced vibrations
- Thermal management system for faster warm-up
- Low-friction piston rings for efficiency
Engine Performance
This section focuses on the performance metrics of the 5.5L V8 engine, including horsepower, torque, acceleration, and fuel efficiency. It also highlights the engine's adaptability across different G-Class models.
Engine Performance
This section focuses on the performance metrics of the 5.5L V8 engine, including horsepower, torque, acceleration, and fuel efficiency. It also highlights the engine's adaptability across different G-Class models.
Power and Torque
- 382 to 544 horsepower depending on the model year
- 391 to 560 lb-ft of torque
- Peak torque available at low RPMs
- High-revving capability for sporty driving
- Smooth power delivery across the rev range
- Adaptive tuning for various driving conditions
Fuel Efficiency and Emissions
- EPA-estimated 13-15 mpg city, 18-20 mpg highway
- Compliance with Euro 5 and Euro 6 emission standards
- Particulate filter for reduced emissions
- Optimized combustion process for efficiency
- Regenerative braking system in hybrid models
- Fuel economy improvements over older V8 engines
Maintenance and Reliability
This section provides guidance on maintaining the 5.5L V8 engine to ensure longevity and optimal performance. It includes recommended service intervals, common issues, and troubleshooting tips.
Maintenance and Reliability
This section provides guidance on maintaining the 5.5L V8 engine to ensure longevity and optimal performance. It includes recommended service intervals, common issues, and troubleshooting tips.
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 50,000 miles
- Timing chain inspection every 100,000 miles
- Regular diagnostics for electronic systems
Common Issues and Solutions
- Oil leaks from valve cover gaskets
- Carbon buildup in intake valves
- Faulty ignition coils causing misfires
- Overheating due to coolant system issues
- Worn-out hydraulic engine mounts
- Timing chain tensioner wear over time
Search Specifications
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Engine Specifications
Overview
- Type
- V8 naturally aspirated petrol engine
- Configuration
- 90-degree V8
- Displacement
- 5.5 liters (5461 cc)
- Valvetrain
- DOHC, 4 valves per cylinder
- Fuel System
- Sequential multi-port fuel injection
- Location
- Front, longitudinal
Dimensions
- Length
- 28.7 inches (729 mm)
- Width
- 27.6 inches (701 mm)
- Height
- 26.4 inches (671 mm)
- Weight
- 529 lbs (240 kg)
- Bore
- 98 mm (3.86 inches)
- Stroke
- 90.5 mm (3.56 inches)
- Compression Ratio
- 10.7:1
- Oil Capacity
- 8.5 quarts (8 liters)
Materials
- Block
- Aluminum alloy
- Cylinder Heads
- Aluminum alloy
- Pistons
- Forged aluminum
- Crankshaft
- Forged steel
- Valves
- Titanium alloy
Features
- Performance
-
- 382 horsepower @ 6000 rpm
- 391 lb-ft torque @ 2800-4800 rpm
- Top speed of 130 mph (electronically limited)
- 0-60 mph in 6.1 seconds
- Efficiency
-
- Variable valve timing
- Electronic throttle control
- Low friction piston rings
- Optimized combustion chambers
- Cooling
-
- Water-cooled engine block
- Dual electric radiator fans
- High-capacity oil cooler
- Thermostatically controlled coolant flow
- Ignition
-
- Coil-on-plug ignition system
- Platinum-tipped spark plugs
- Knock sensors for optimal timing
- High-energy ignition coils
- Emissions
-
- Catalytic converters
- Exhaust gas recirculation (EGR)
- Oxygen sensors
- Closed-loop fuel system
Safety Features
- Engine Protection
-
- Low oil pressure warning
- Overheating protection
- Engine immobilizer system
- Sensors
-
- Knock sensors
- Temperature sensors
- Oil level sensor
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Hydraulic engine mounts
- Optimized exhaust system
- Vibration Control
-
- Dual-mass flywheel
- Balanced crankshaft
- Precision-engineered pistons
Accessories
- Standard
-
- Air intake system
- Stainless steel exhaust manifold
- High-capacity alternator
- Optional
-
- Performance exhaust system
- Cold air intake
- Engine tuning module
Maintenance
- 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
- Air filter replacement every 30,000 miles
- Coolant flush every 50,000 miles
- Notes
- Use only Mercedes-Benz approved engine oil and filters
Warranty
- Basic
- 4 years/50,000 miles
- Powertrain
- 6 years/70,000 miles
- Corrosion
- 12 years/unlimited miles
- Emissions
- 8 years/80,000 miles
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision casting of engine block
- CNC machining of components
- Robotic assembly
- Laser-guided quality control
- Quality Control
- Dimensional Checks: High-precision laser scanningPerformance Testing: Dynamometer testingLeak Testing: Pressurized coolant and oil systems
- Sustainability
-
- Recycled aluminum in engine block
- Low-emission manufacturing process
- Energy-efficient assembly line
- Production Metrics
- Annual Production: Approximately 50,000 unitsProduction Time: 4 hours per engineDefect Rate: Less than 0.1%
Service Information for 5.5l v8 engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Inspect air filter
- Check coolant level
- Inspect drive belts
- Check engine for leaks
Use only Mercedes-Benz approved 5W-40 synthetic oil
- Replace air filter
- Inspect spark plugs
- Check ignition system
- Inspect fuel system
- Test emissions system
Consider replacing spark plugs if engine performance is reduced
- Replace spark plugs
- Replace fuel filter
- Inspect timing chain
- Flush cooling system
- Check engine mounts
Timing chain replacement may be necessary if unusual noise is present
Common Questions
Find answers to common questions about torque specifications
Q1 Is the 5.5L V8 engine compatible with all Mercedes G-Class models from 1979 to 2018?
Is the 5.5L V8 engine compatible with all Mercedes G-Class models from 1979 to 2018?
The 5.5L V8 engine is compatible with select Mercedes G-Class models produced between 2006 and 2018, including the G500 and G55 AMG variants. Earlier models (1979-2005) require significant modifications for compatibility. Verify your vehicle’s VIN and consult a Mercedes-Benz dealer or certified mechanic to confirm fitment.
Q2 What are the maintenance requirements for the 5.5L V8 engine?
What are the maintenance requirements for the 5.5L V8 engine?
Regular maintenance for the 5.5L V8 engine includes oil changes every 10,000 miles or annually, air filter replacement every 30,000 miles, and spark plug replacement every 60,000 miles. Ensure coolant and transmission fluid are checked annually. Adhere to the manufacturer’s service schedule for timing chain and belt inspections to prevent costly repairs.
Q3 How do I install or replace the 5.5L V8 engine in a G-Class?
How do I install or replace the 5.5L V8 engine in a G-Class?
Replacing the 5.5L V8 engine requires professional expertise. Begin by disconnecting the battery, draining fluids, and removing the hood and front grille. Unbolt the engine mounts, disconnect wiring harnesses, and carefully lift the engine using a hoist. Install the new engine by reversing the process, ensuring all connections are secure. Test the engine before driving.
Q4 What are common troubleshooting steps for the 5.5L V8 engine?
What are common troubleshooting steps for the 5.5L V8 engine?
Common issues include misfires, oil leaks, and overheating. For misfires, inspect spark plugs, coils, and fuel injectors. Oil leaks often stem from gasket failures; replace worn gaskets promptly. Overheating may indicate a faulty thermostat or coolant system blockage. Use an OBD-II scanner to diagnose error codes and consult a mechanic for complex issues.
Q5 How can I optimize the performance of the 5.5L V8 engine?
How can I optimize the performance of the 5.5L V8 engine?
Enhance performance by upgrading the air intake and exhaust systems for better airflow. Use high-performance spark plugs and synthetic oil for improved efficiency. Consider ECU tuning to increase horsepower and torque. Regularly clean fuel injectors and ensure proper tire alignment to maximize power delivery and fuel economy.
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 G-Class 5.5L V8 Engine Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 5.5L V8 engine.
Technical Service Bulletin for 5.5L V8 Engine Updates
Coming SoonDetails recent updates and fixes for the 5.5L V8 engine, including recalls and performance enhancements.
G-Class 5.5L V8 Engine Parts Catalog
Coming SoonComplete catalog of OEM and aftermarket parts for the 5.5L V8 engine, including part numbers and descriptions.
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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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