Mercedes-Benz Mercedes G-Class 2018-present Fuel System Specifications
Mercedes-Benz Mercedes G-Class 2018-present

Mercedes-Benz Mercedes G-Class 2018-present Fuel System Specifications

Explore the comprehensive fuel specifications for the 2018-Present Mercedes-Benz G-Class, including fuel type, tank capacity, consumption, and emissions. Ideal for owners, buyers, and technicians seeking detailed technical insights.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2018-Present Mercedes-Benz G-Class. It includes information on fuel types, efficiency, tank capacity, and performance metrics. Use this guide to understand the technical aspects of the G-Class fuel system and optimize your driving experience. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.

How to Use

Use the search functionality to quickly locate specific fuel-related terms or metrics. Enter keywords like 'fuel efficiency' or 'tank capacity' to find relevant sections.

Navigate through the document using the section titles and subsections. Each section is labeled clearly, and subsections provide detailed points for easy reference.

Key Specifications

Fuel Type (Gasoline)

Premium Unleaded (91+ octane)

Fuel Type (Diesel)

Ultra-Low Sulfur Diesel (ULSD)

Tank Capacity (Gasoline)

25.4 gallons

Tank Capacity (Diesel)

26.4 gallons

Combined MPG (Gasoline)

14-17 MPG

Available Specifications

Fuel Types and Compatibility

This section covers the types of fuel compatible with the 2018-Present Mercedes-Benz G-Class, including gasoline and diesel options. It also discusses the recommended fuel grades and their impact on performance.

Gasoline Options
  • Compatible with premium unleaded gasoline (91 octane or higher)
  • Recommended for optimal performance and engine longevity
  • Supports ethanol blends up to E10
  • Higher octane fuels improve acceleration and efficiency
Diesel Options
  • Compatible with ultra-low sulfur diesel (ULSD)
  • Recommended for models equipped with diesel engines
  • Provides better fuel economy compared to gasoline
  • Reduces CO2 emissions for eco-friendly driving

Fuel Efficiency and Consumption

This section provides detailed information on the fuel efficiency and consumption rates of the G-Class. It includes data on city, highway, and combined MPG ratings.

Gasoline Models
  • City MPG: 13-15
  • Highway MPG: 17-19
  • Combined MPG: 14-17
  • Fuel consumption varies based on driving conditions
Diesel Models
  • City MPG: 18-20
  • Highway MPG: 22-24
  • Combined MPG: 20-22
  • Diesel engines offer superior fuel efficiency

Fuel Tank Capacity and Range

This section outlines the fuel tank capacity of the G-Class and the estimated driving range based on fuel type and efficiency.

Tank Capacity
  • Gasoline models: 25.4 gallons
  • Diesel models: 26.4 gallons
  • Larger tank capacity for extended driving range
  • Designed for long-distance travel and off-road adventures
Driving Range
  • Gasoline models: 330-430 miles per tank
  • Diesel models: 475-550 miles per tank
  • Range varies based on driving habits and terrain
  • Ideal for both urban and rural environments

Component Specifications

Overview

Type
Premium Unleaded Gasoline
Octane Rating
91 (recommended), 87 (minimum)
Fuel Capacity
25.4 gallons (96.1 liters)
Fuel System
Direct Injection
Emission Standard
Euro 6 / Tier 3
Fuel Economy
13 city / 17 highway / 14 combined mpg (US)

Dimensions

Fuel Tank Length
47.2 inches (120 cm)
Fuel Tank Width
31.5 inches (80 cm)
Fuel Tank Height
15.7 inches (40 cm)
Fuel Filler Diameter
1.5 inches (3.8 cm)
Fuel Line Diameter
0.5 inches (1.27 cm)
Fuel Pump Flow Rate
150 liters per hour
Fuel Filter Size
4.7 inches x 2.4 inches (12 cm x 6 cm)

Materials

Fuel Tank
High-density polyethylene with steel reinforcement
Fuel Lines
Nylon with stainless steel braiding
Fuel Pump
Thermoplastic housing with electric motor
Fuel Filter
Cellulose and synthetic fiber media
Fuel injectors
Stainless steel with precision nozzles

Features

Fuel Management
  • Adaptive fuel mapping
  • Eco start/stop system
  • Dynamic fuel pressure regulation
  • Real-time fuel consumption display
Safety
  • Rollover fuel cutoff
  • Leak detection system
  • Impact-resistant fuel tank
  • Vapor recovery system
Performance
  • High-pressure direct injection
  • Turbocharged fuel delivery
  • Optimized combustion efficiency
  • Cold-start fuel enrichment
Environmental
  • Low-evaporation fuel system
  • Compatible with ethanol blends (up to E10)
  • Reduced particulate emissions
  • Closed-loop fuel vapor system
Monitoring
  • Fuel level sensor with 1% accuracy
  • Low fuel warning system
  • Fuel filter clogging alert
  • Fuel system diagnostics via OBD-II

Safety Features

Crash Safety
  • Automatic fuel pump shutoff
  • Reinforced fuel tank placement
  • Firewall protection for fuel lines
Leak Prevention
  • Double-sealed fuel connections
  • Pressure-tested fuel system
  • Corrosion-resistant materials
Environmental Protection
  • Vapor capture system
  • Spill-proof filler neck
  • Recyclable fuel system components

Comfort Features

Refueling
  • Easy-access fuel filler
  • Automatic fuel cap release
  • Fuel door with soft-close mechanism
Driving
  • Smooth fuel delivery
  • Quiet fuel pump operation
  • Minimized fuel sloshing noise
Maintenance
  • Long-life fuel filter
  • Self-diagnosing fuel system
  • Easy-access fuel pump
Climate Adaptation
  • Cold-weather fuel additives
  • Heat-resistant fuel lines
  • Altitude-compensating fuel system

Accessories

Fuel Additives
  • Fuel system cleaner
  • Octane booster
  • Water remover
  • Stabilizer for long-term storage
Fuel Caps
  • Locking fuel cap
  • Vented fuel cap
  • Quick-release fuel cap
Monitoring Tools
  • Fuel pressure gauge
  • Fuel flow meter
  • Fuel consumption tracker

Maintenance

Service interval
10,000 miles or 12 months
Service Items
  • Fuel filter replacement
  • Fuel system inspection
  • Fuel injector cleaning
  • Fuel pump performance test
  • Fuel tank inspection for leaks
Maintenance Notes
Use only recommended fuel types and additives. Regularly check for fuel system leaks and ensure proper fuel cap sealing.

Warranty

Basic Warranty
Miles: 50,000
Years: 4
Coverage: Fuel system components excluding wear items
Emissions Warranty
Miles: 80,000
Years: 8
Coverage: Fuel system components affecting emissions
Corrosion Warranty
Miles: Unlimited
Years: 30
Coverage: Fuel tank corrosion perforation
Extended Warranty
Miles: 100,000
Years: 7
Coverage: Optional extended coverage for fuel pump and injectors

Production Details

Manufacturer
Mercedes-Benz AG
Manufacturing Process
  • Robotic assembly of fuel system components
  • Precision testing of fuel injectors
  • Pressure testing of fuel lines and tank
Quality Control
Leak Testing: 100% of fuel systems tested
Pressure Testing: 150% of operating pressure
Material Certification: ISO 9001 certified materials
Sustainability Practices
  • Recycled materials in fuel system components
  • Low-emission manufacturing processes
  • Energy-efficient production facilities
Production Metrics
Annual Production: Approximately 500,000 fuel systems
Defect Rate: Less than 0.01%
Production Time: Average 2 hours per fuel system

Service Information for Fuel System Service

Maintenance and service requirements specific to the fuel system

10,000
12
  • Inspect fuel lines for leaks
  • Check fuel filter condition
  • Test fuel pressure
  • Inspect fuel tank for damage
  • Verify fuel cap seal integrity

Use only manufacturer-approved diagnostic tools

30,000
36
  • Replace fuel filter
  • Clean fuel injectors
  • Inspect fuel pump operation
  • Check fuel system pressure
  • Test fuel level sensor accuracy

Specialized equipment required for fuel system testing

60,000
72
  • Complete fuel system inspection
  • Replace fuel pump if necessary
  • Test fuel injector spray pattern
  • Inspect and clean fuel tank
  • Verify emission control system operation

Major service requires certified technician and specialized tools

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is compatible with the 2018-Present Mercedes G-Class?

The 2018-Present Mercedes G-Class is compatible with premium unleaded gasoline with an octane rating of 91 or higher. Diesel variants require ultra-low sulfur diesel (ULSD). Using the recommended fuel ensures optimal engine performance, fuel efficiency, and longevity. Always refer to the owner's manual for specific fuel requirements and avoid using lower-octane fuels to prevent engine knocking or damage.

Q2

What are the maintenance requirements for the Mercedes G-Class fuel system?

The Mercedes G-Class fuel system requires regular maintenance, including fuel filter replacement every 30,000 miles or as specified in the owner's manual. Inspect fuel lines and connections for leaks or wear during routine service. Use only high-quality fuel additives approved by Mercedes-Benz to maintain injector cleanliness. Adhering to the recommended maintenance schedule ensures efficient fuel delivery and prevents potential system failures.

Q3

How do I replace the fuel filter on a Mercedes G-Class?

To replace the fuel filter on a Mercedes G-Class, first, locate the filter, typically near the fuel tank. Depressurize the fuel system by removing the fuel pump fuse and running the engine until it stalls. Disconnect the battery, then remove the old filter, noting the flow direction. Install the new filter, ensuring proper alignment, and reconnect all components. Finally, reconnect the battery and test for leaks before starting the engine.

Q4

What should I do if my Mercedes G-Class experiences fuel delivery issues?

If your Mercedes G-Class experiences fuel delivery issues, start by checking the fuel pump fuse and relay. Inspect the fuel lines for leaks or blockages and ensure the fuel filter is not clogged. Use a diagnostic tool to check for error codes related to the fuel system. If the issue persists, consult a certified Mercedes-Benz technician for a thorough inspection and repair.

Q5

How can I optimize fuel efficiency in my Mercedes G-Class?

To optimize fuel efficiency in your Mercedes G-Class, maintain proper tire pressure, use the recommended fuel grade, and avoid excessive idling. Regularly service the fuel system, including injector cleaning and filter replacement. Drive smoothly, avoiding rapid acceleration and heavy braking. Utilize the ECO mode if available, and remove unnecessary weight from the vehicle to reduce fuel consumption.

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 Owner's Manual

Coming Soon

Comprehensive guide covering vehicle operation, maintenance, and technical specifications for the 2018-Present Mercedes G-Class.

Technical Service Bulletin: Fuel System Updates

Coming Soon

Latest updates and fixes for the fuel system in the 2018-Present Mercedes G-Class, including software enhancements and component improvements.

Mercedes G-Class Parts Catalog

Coming Soon

Detailed catalog of OEM parts and accessories for the 2018-Present Mercedes G-Class, including fuel system components.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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