Mercedes-Benz Mercedes CLS 2018-present Fuel System Specifications
Mercedes-Benz Mercedes CLS 2018-present

Mercedes-Benz Mercedes CLS 2018-present Fuel System Specifications

Explore the comprehensive fuel specifications for the 2018-Present Mercedes-Benz CLS, including fuel type, tank capacity, consumption rates, and emission standards. Ideal for owners, technicians, and enthusiasts seeking detailed technical insights.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2018-Present Mercedes-Benz CLS. It includes information on fuel types, efficiency, tank capacity, and performance metrics. Use this guide to understand the technical aspects of the vehicle's fuel system and optimize its usage. 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 technical points for easy reference.

Key Specifications

Fuel Tank Capacity

66 liters

City Fuel Consumption

12.5 L/100km

Highway Fuel Consumption

8.2 L/100km

Recommended Fuel

Premium Unleaded (91+ octane)

Fuel Injection

Direct Injection

Available Specifications

Fuel Types and Compatibility

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

Recommended Fuel Grades
  • Premium unleaded gasoline (91 octane or higher)
  • Diesel fuel with a cetane number of 51 or higher
  • Compatible with E10 ethanol blends
  • Not recommended for E85 or higher ethanol blends
Fuel System Components
  • Direct fuel injection system
  • High-pressure fuel pump
  • Multi-spark ignition system
  • Advanced fuel filtration system

Fuel Efficiency and Consumption

This section provides detailed information on the fuel efficiency and consumption rates of the Mercedes-Benz CLS. It includes data for both city and highway driving conditions.

City Driving Efficiency
  • Average fuel consumption: 12.5 L/100km
  • Stop-start technology for reduced idling consumption
  • Eco mode for optimized fuel usage
  • Regenerative braking system
Highway Driving Efficiency
  • Average fuel consumption: 8.2 L/100km
  • Aerodynamic design for reduced drag
  • 9-speed automatic transmission for smooth shifting
  • Adaptive cruise control for consistent speed

Fuel Tank and Capacity

This section details the fuel tank specifications, including capacity, materials, and safety features. It also covers refueling procedures and precautions.

Tank Capacity and Design
  • Fuel tank capacity: 66 liters
  • Plastic fuel tank for reduced weight
  • Integrated fuel level sensor
  • Anti-siphon protection
Refueling and Safety
  • Automatic fuel filler door
  • Capless refueling system
  • Overfill protection
  • Fuel vapor recovery system

Component Specifications

Overview

Type
Premium unleaded gasoline or diesel
Configuration
Direct injection
Platform
MRA (Modular Rear Architecture)
Material
High-strength steel and aluminum
Location
Rear-mounted fuel tank

Dimensions

Tank Capacity
66 liters (17.4 gallons)
Tank Length
1200 mm (47.2 in)
Tank Width
800 mm (31.5 in)
Tank Height
400 mm (15.7 in)
Fuel Line Diameter
8 mm (0.31 in)
Fuel Pump Pressure
5 bar (72.5 psi)
Fuel Filter Size
150 mm x 50 mm (5.9 in x 2 in)

Materials

Tank Material
High-density polyethylene
Fuel Lines
Nylon with rubber coating
Fuel Pump
Stainless steel and plastic composite
Fuel Filter
Cellulose and synthetic fibers

Features

Fuel Efficiency
  • Start-stop technology
  • Eco mode optimization
  • Cylinder deactivation
  • Regenerative braking
Fuel Delivery
  • High-pressure direct injection
  • Variable fuel pressure
  • Multi-point injection system
  • Turbocharging support
Monitoring
  • Real-time fuel consumption display
  • Low fuel warning system
  • Range estimation
  • Fuel quality sensor
Emissions
  • Euro 6 compliant
  • Particulate filter
  • Selective catalytic reduction
  • Exhaust gas recirculation
Safety
  • Rollover valve
  • Leak detection system
  • Automatic fuel cutoff
  • Impact-resistant tank

Safety Features

Leak Prevention
  • Double-walled fuel tank
  • Automatic shutoff valve
  • Leak detection sensors
Fire Safety
  • Flame arrestor
  • Thermal protection
  • Impact-resistant fuel lines
Environmental
  • Vapor recovery system
  • Sealed fuel system
  • Low evaporative emissions

Comfort Features

Refueling
  • Capless fuel filler
  • Automatic fuel door
  • Easy-access fuel cap
Driving
  • Smooth fuel delivery
  • Quiet operation
  • Consistent performance
Maintenance
  • Long service intervals
  • Easy filter replacement
  • Self-diagnostic system

Accessories

Fuel Additives
  • Fuel system cleaner
  • Octane booster
  • Diesel anti-gel
Refueling Tools
  • Fuel funnel
  • Emergency fuel can
  • Fuel stabilizer
Monitoring
  • Fuel consumption tracker
  • Range calculator
  • Fuel quality tester

Maintenance

Service interval
10,000 miles or 12 months
Service Items
  • Fuel filter replacement
  • Fuel system inspection
  • Fuel pump check
  • Fuel line inspection
  • Tank cleaning
Maintenance Notes
Use only recommended fuel types and additives to maintain warranty coverage.

Warranty

Basic
Miles: 50,000
Years: 4
Coverage: Fuel system components
Powertrain
Miles: 100,000
Years: 7
Coverage: Fuel pump and injectors
Emissions
Miles: 70,000
Years: 5
Coverage: Catalytic converter and sensors
Corrosion
Miles: Unlimited
Years: 30
Coverage: Fuel tank corrosion

Production Details

Manufacturer
Mercedes-Benz AG
Manufacturing Process
  • Injection molding for fuel tank
  • Robotic assembly for fuel lines
  • Precision machining for fuel pump
Quality Control
Pressure Testing: 100% of fuel tanks
Leak Testing: 100% of fuel systems
Performance Testing: Random sampling
Sustainability
  • Recycled materials in fuel tank
  • Low-emission manufacturing
  • Energy-efficient production
Production Metrics
Annual Output: 500,000 units
Defect Rate: 0.01%
Energy Use: 10 kWh per unit

Service Information for fuel Service

Maintenance and service requirements specific to the fuel system

10,000
12
  • Inspect fuel lines for leaks
  • Check fuel filter condition
  • Test fuel pump pressure
  • Inspect fuel tank for damage
  • Verify fuel quality sensor operation

Use only manufacturer-approved fuel additives.

20,000
24
  • Replace fuel filter
  • Clean fuel injectors
  • Inspect fuel tank venting system
  • Check fuel system for contamination
  • Test fuel pressure regulator

Ensure proper disposal of old fuel filter.

50,000
60
  • Replace fuel pump if necessary
  • Inspect and clean fuel tank
  • Replace fuel lines if worn
  • Test entire fuel system for leaks
  • Verify emissions compliance

Major service may require 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 CLS?

The 2018-Present Mercedes CLS is compatible with premium unleaded gasoline with an octane rating of 91 or higher. Using lower-octane fuel may result in reduced performance and efficiency. Diesel engines in the CLS lineup require ultra-low sulfur diesel (ULSD). Always refer to the owner's manual for specific fuel requirements and avoid using ethanol blends above 10% to prevent engine damage.

Q2

What are the maintenance requirements for the Mercedes CLS fuel system?

The Mercedes CLS fuel system requires regular maintenance, including fuel filter replacement every 30,000 miles and periodic inspection of fuel injectors and lines. Use only recommended fuel additives to clean the system. Adhere to the manufacturer's service schedule, typically every 10,000 miles, to ensure optimal performance and longevity of the fuel system components.

Q3

How do I replace the fuel filter in a Mercedes CLS?

To replace the fuel filter in a Mercedes CLS, first, locate the filter near the fuel tank. Disconnect the negative battery terminal for safety. Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Disconnect fuel lines and electrical connectors, then remove the old filter. Install the new filter, reconnect all components, and test for leaks before starting the engine.

Q4

What should I do if my Mercedes CLS has poor fuel efficiency?

If your Mercedes CLS has poor fuel efficiency, check for clogged fuel injectors, a dirty air filter, or low tire pressure. Use a diagnostic tool to scan for error codes related to the fuel system or oxygen sensors. Ensure you are using the correct fuel grade and consider resetting the engine control unit (ECU) to recalibrate fuel delivery settings.

Q5

How can I optimize the fuel performance of my Mercedes CLS?

To optimize fuel performance, use premium fuel, maintain proper tire pressure, and avoid excessive idling. Regularly replace air and fuel filters, and ensure the engine is tuned according to the manufacturer's specifications. Drive smoothly, avoiding rapid acceleration and heavy braking, and consider using fuel system cleaners recommended by Mercedes-Benz to maintain injector 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 CLS Owner's Manual

Coming Soon

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

Technical Service Bulletin: Fuel System Updates

Coming Soon

Latest updates and fixes for the fuel system in the 2018-Present Mercedes CLS, including software updates and component replacements.

Mercedes CLS Parts Catalog

Coming Soon

Detailed catalog of OEM parts and accessories for the 2018-Present Mercedes CLS, 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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