Mercedes-Benz Mercedes G-Class 2018-present 4.0L V8 Engine Engine Specifications
Mercedes-Benz Mercedes G-Class 2018-present

Mercedes-Benz Mercedes G-Class 2018-present 4.0L V8 Engine Specifications

Explore the detailed 4.0L V8 engine specifications for the 2018-Present Mercedes G-Class. Learn about horsepower, torque, fuel efficiency, and engine configuration to enhance your understanding of this luxury SUV's performance and maintenance needs.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the 4.0L V8 engine used in the 2018-Present Mercedes G-Class. It is designed to help users understand the engine's performance, features, and maintenance requirements. Use the search and navigation instructions to quickly find relevant information. The document is divided into sections covering engine performance, design, and key specifications.

How to Use

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Key Specifications

Displacement

4.0L

Horsepower

416 hp

Torque

450 lb-ft

Fuel Efficiency

14 MPG combined

Top Speed

130 mph

Available Specifications

Engine Performance

This section covers the performance characteristics of the 4.0L V8 engine, including horsepower, torque, and acceleration. It also includes details on fuel efficiency and driving dynamics.

Power and Torque
  • Horsepower: 416 hp @ 5,250-5,500 rpm
  • Torque: 450 lb-ft @ 2,250-4,750 rpm
  • 0-60 mph acceleration: 5.6 seconds
  • Top speed: 130 mph (electronically limited)
Fuel Efficiency
  • City MPG: 13
  • Highway MPG: 17
  • Combined MPG: 14
  • Fuel tank capacity: 25.4 gallons

Engine Design

This section provides an overview of the 4.0L V8 engine's design, including its construction, materials, and advanced technologies.

Construction and Materials
  • Aluminum block and cylinder heads
  • Twin-turbocharged configuration
  • Direct fuel injection system
  • Forged crankshaft and connecting rods
Advanced Technologies
  • ECO Start/Stop system
  • Variable valve timing
  • Integrated exhaust manifold
  • Thermal management system

Maintenance and Durability

This section outlines maintenance requirements and durability features of the 4.0L V8 engine, including service intervals and common maintenance tasks.

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
Durability Features
  • High-strength engine components
  • Advanced cooling system
  • Corrosion-resistant materials
  • Extended service life with proper maintenance

Engine Specifications

Overview

Type
Turbocharged V8
Configuration
90-degree V8
Platform
M176
Material
Aluminum block and heads
Location
Front longitudinal

Dimensions

Length
29.5 inches (749 mm)
Width
32.7 inches (831 mm)
Height
27.6 inches (701 mm)
Weight
438 lbs (198.7 kg)
Displacement
3982 cc (243 cubic inches)
Bore
3.27 inches (83 mm)
Stroke
3.62 inches (92 mm)
Compression Ratio
10.5:1

Materials

Block
Aluminum alloy
Cylinder Heads
Aluminum alloy
Pistons
Forged aluminum
Crankshaft
Forged steel
Valvetrain
DOHC, 4 valves per cylinder

Features

Performance
  • Twin-turbocharging
  • Direct fuel injection
  • Variable valve timing
  • Start-stop technology
Cooling
  • Dual water pumps
  • High-capacity radiator
  • Oil cooler
  • Thermostatically controlled cooling
Fuel System
  • High-pressure direct injection
  • Electronic throttle control
  • Variable fuel pressure
  • Eco mode optimization
Ignition
  • Coil-on-plug ignition
  • Adaptive ignition timing
  • Knock control system
  • High-energy spark plugs
Emissions
  • Catalytic converters
  • Exhaust gas recirculation
  • Particulate filter
  • OBD-II compliance

Safety Features

Engine Protection
  • Overheat protection
  • Low oil pressure shutdown
  • Over-rev protection
Monitoring
  • Real-time diagnostics
  • Engine management system
  • Performance monitoring
Structural
  • Reinforced engine mounts
  • Crash detection system
  • Automatic fuel cutoff

Comfort Features

Noise Reduction
  • Acoustic engine cover
  • Balanced crankshaft
  • Hydraulic engine mounts
Vibration Control
  • Dual-mass flywheel
  • Active engine mounts
  • Harmonic balancer
Climate Control
  • Auxiliary heater
  • Engine pre-heating
  • Climate-controlled oil system

Accessories

intake
  • High-flow air filter
  • Cold air intake
  • Turbo inlet pipes
Exhaust
  • Stainless steel headers
  • High-flow catalytic converters
  • Performance mufflers
Cooling
  • Upgraded radiator
  • Performance oil cooler
  • Auxiliary cooling fans

Maintenance

Service interval
10,000 miles or 12 months
Service Items
  • Oil and filter change
  • Spark plug replacement
  • Air filter inspection
  • Coolant flush
  • Timing chain inspection
Maintenance Notes
Use only Mercedes-Benz approved fluids and parts

Warranty

Basic
Miles: 50,000
Years: 4
Coverage: Bumper-to-bumper
Powertrain
Miles: 100,000
Years: 7
Coverage: Engine and transmission
Corrosion
Miles: Unlimited
Years: 12
Coverage: Perforation only
Roadside Assistance
Miles: Unlimited
Years: 4
Coverage: 24/7 assistance

Production Details

Manufacturer
Mercedes-AMG
Manufacturing Process
  • Precision casting
  • CNC machining
  • Robotic assembly
  • Hand-finished components
Quality Control
Testing: Cold testing, Hot testing, Dyno testing
inspection: Dimensional accuracy, Material integrity, Performance validation
Sustainability Practices
  • Recycled aluminum
  • Low-emission manufacturing
  • Energy-efficient processes
Production Metrics
Units Per Day: 150
Defect Rate: 0.01%
Energy Consumption: 15 kWh per engine

Service Information for 4.0l v8 engine Service

Maintenance and service requirements specific to this component

10,000
12
  • Oil and filter change
  • Air filter inspection
  • Spark plug inspection
  • Coolant level check
  • Belt and hose inspection

Use only Mercedes-Benz approved 0W-40 oil

30,000
36
  • Fuel filter replacement
  • Cabin air filter replacement
  • Brake fluid flush
  • Ignition system check
  • Turbocharger inspection

Special tools required for turbo inspection

60,000
72
  • Timing chain inspection
  • Water pump replacement
  • Transmission fluid change
  • Engine mount inspection
  • Complete system diagnostics

Major service requiring dealer-level equipment

Common Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the 4.0L V8 engine in the 2018-Present Mercedes G-Class?

The 4.0L V8 engine in the Mercedes G-Class (2018-Present) is a twin-turbocharged, direct-injection engine producing 416-577 horsepower and 450-627 lb-ft of torque, depending on the model (e.g., G550, AMG G63). It features a 90-degree V-angle, aluminum block and heads, and is paired with a 9-speed automatic transmission. The engine is compatible with premium unleaded gasoline and meets Euro 6 and EPA Tier 3 emissions standards.

Q2

What are the maintenance requirements for the 4.0L V8 engine?

Maintenance for the 4.0L V8 engine includes oil changes every 10,000 miles or 12 months, air filter replacement every 30,000 miles, and spark plug replacement every 60,000 miles. Regular inspections of the cooling system, belts, and hoses are recommended. Mercedes-Benz also advises using synthetic oil and genuine parts to ensure optimal performance and longevity. Adherence to the service schedule in the owner’s manual is crucial.

Q3

How do I install or replace components in the 4.0L V8 engine?

To install or replace components in the 4.0L V8 engine, first disconnect the battery. For parts like the air filter or spark plugs, remove the engine cover and follow the step-by-step guide in the service manual. For complex tasks like turbocharger replacement, consult a certified technician. Always use torque wrenches for precise tightening and ensure all connections are secure before reassembling.

Q4

What are common troubleshooting steps for the 4.0L V8 engine?

Common troubleshooting steps include checking for error codes with an OBD-II scanner, inspecting the fuel system for leaks, and verifying the condition of spark plugs and ignition coils. If the engine misfires, inspect the fuel injectors and air intake. For overheating, check the coolant level and radiator. If issues persist, consult the service manual or a certified technician.

Q5

How can I optimize the performance of the 4.0L V8 engine?

To optimize performance, use high-quality synthetic oil and premium fuel. Regularly clean or replace the air filter and ensure the cooling system is in good condition. Consider upgrading the exhaust system and ECU tuning for enhanced power. Avoid aggressive driving during the engine break-in period (first 1,000 miles) and maintain proper tire pressure for better efficiency.

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 G-Class 4.0L V8 Service Manual

Coming Soon

Comprehensive guide covering maintenance, repair, and troubleshooting for the 4.0L V8 engine in the G-Class.

Technical Service Bulletin for 4.0L V8 Engine Updates

Coming Soon

Latest updates and fixes for the 4.0L V8 engine, including software enhancements and part revisions.

G-Class 4.0L V8 Parts Catalog

Coming Soon

Detailed catalog of genuine parts and accessories for the 4.0L V8 engine and related systems.

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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.
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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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