Mercedes-Benz Mercedes C-Class 2007-2014 Fuel System Specifications
Mercedes-Benz Mercedes C-Class 2007-2014

Mercedes-Benz Mercedes C-Class 2007-2014 Fuel System Specifications

Explore the detailed fuel specifications for the 2007-2014 Mercedes-Benz C-Class. Learn about fuel type, capacity, economy, and emission standards to optimize performance and efficiency. Essential for owners and technicians.

Updated

Overview Specifications

This document provides detailed fuel specifications for the 2007-2014 Mercedes-Benz C-Class. It is designed to help users understand the fuel requirements, efficiency, and performance of these models. Use this guide to find specific technical details, compare fuel-related features, and ensure optimal vehicle performance. The sections are organized by fuel type, efficiency, and system details, with a quick reference table for key specifications.

How to Use

Use the search functionality to find specific fuel-related terms or specifications. Enter keywords like 'octane rating' or 'fuel capacity' to quickly locate relevant information within the document.

Navigate through the document using the section titles and subsections. Click on a section to expand it and view detailed points. Use the quick reference table at the end for a summary of key fuel specifications.

Key Specifications

Fuel Type (Gasoline)

Premium Unleaded

Fuel Type (Diesel)

Ultra-Low Sulfur Diesel

Fuel Tank Capacity

16.4 gallons

City MPG (Gasoline)

18-22 MPG

Highway MPG (Diesel)

36-41 MPG

Available Specifications

Fuel Types

This section outlines the recommended fuel types for the 2007-2014 Mercedes-Benz C-Class. It includes details on gasoline, diesel, and alternative fuel options, along with their respective benefits and performance impacts.

Gasoline Engines
  • Recommended octane rating: 91 or higher
  • Compatible with ethanol blends up to E10
  • Optimized for premium unleaded gasoline
  • Improves engine performance and longevity
  • Reduces risk of knocking and pinging
Diesel Engines
  • Requires ultra-low sulfur diesel (ULSD)
  • Recommended cetane rating: 50 or higher
  • Supports biodiesel blends up to B5
  • Enhances fuel efficiency and torque
  • Reduces emissions and environmental impact

Fuel Efficiency

This section covers the fuel efficiency metrics for the 2007-2014 Mercedes-Benz C-Class. It includes details on miles per gallon (MPG) ratings, driving conditions, and tips for maximizing efficiency.

City and Highway MPG
  • Gasoline models: 18-22 MPG city, 26-31 MPG highway
  • Diesel models: 24-28 MPG city, 36-41 MPG highway
  • Hybrid models: 28-32 MPG city, 34-38 MPG highway
  • Performance models: 15-20 MPG city, 22-27 MPG highway
Efficiency Tips
  • Maintain proper tire pressure
  • Use recommended motor oil grade
  • Avoid aggressive acceleration and braking
  • Regularly replace air filters
  • Keep engine tuned and serviced

Fuel System Details

This section provides technical details about the fuel system in the 2007-2014 Mercedes-Benz C-Class. It includes information on fuel tank capacity, injection systems, and safety features.

Fuel Tank Capacity
  • Standard gasoline models: 16.4 gallons
  • Diesel models: 16.4 gallons
  • AMG performance models: 17.4 gallons
Fuel Injection System
  • Direct fuel injection for gasoline engines
  • Common rail direct injection for diesel engines
  • High-pressure fuel pump for optimal performance
  • Electronically controlled fuel delivery

Component Specifications

Overview

Type
Gasoline/Diesel
Configuration
Direct Injection
Platform
Mercedes-Benz M271/M274 (Gasoline), OM651 (Diesel)
Material
Aluminum Alloy (Engine Block)
Location
Front Engine, Rear-Wheel Drive/All-Wheel Drive

Dimensions

Fuel Tank Capacity
16.4 gallons (62 liters)
Fuel Line Diameter
0.31 inches (8 mm)
Fuel Pump Pressure
58 psi (4 bar)
Fuel Filter Size
3.15 x 3.15 x 3.94 inches (80 x 80 x 100 mm)
Fuel injector Spray Angle
20 degrees
Fuel Rail Length
15.75 inches (400 mm)
Fuel Tank Weight
22 lbs (10 kg) when empty

Materials

Fuel Tank
High-Density Polyethylene
Fuel Lines
Nylon with Rubber Coating
Fuel Pump
Stainless Steel with Plastic Housing
Fuel Rail
Aluminum Alloy
Fuel injectors
Stainless Steel with Ceramic Nozzle

Features

Fuel Delivery
  • High-Pressure Fuel Pump
  • Direct Injection System
  • Variable Fuel Pressure Control
  • Fuel Returnless System
Fuel Monitoring
  • Fuel Level Sensor
  • Fuel Temperature Sensor
  • Fuel Pressure Sensor
  • Low Fuel Warning System
Fuel Efficiency
  • Start-Stop Technology
  • Eco Mode
  • Optimized Combustion
  • Reduced Fuel Evaporation
Fuel Safety
  • Fuel Shut-Off Valve
  • Rollover Protection
  • Leak Detection System
  • Firewall Insulation
Fuel Maintenance
  • Replaceable Fuel Filter
  • Self-Sealing Fuel Cap
  • Fuel System Cleaner Compatibility
  • Diagnostic Port for Fuel System

Safety Features

Crash Protection
  • Fuel Tank Impact Resistance
  • Automatic Fuel Pump Shutoff
Fire Prevention
  • Flame Arrestor in Fuel Tank
  • Heat Shielding Around Fuel Lines
Emission Control
  • Evaporative Emission System
  • Catalytic Converter Integration

Comfort Features

Refueling
  • Easy-Access Fuel Door
  • Automatic Locking Fuel Cap
Driving
  • Smooth Fuel Delivery
  • Quiet Fuel Pump Operation
Maintenance
  • User-Replaceable Fuel Filter
  • Clear Fuel Line Markings
Monitoring
  • Digital Fuel Gauge
  • Range Estimation Display

Accessories

Fuel Additives
  • Fuel System Cleaner
  • Octane Boosters
  • Diesel Additives
Fuel Containers
  • Portable Fuel Can
  • Emergency Fuel Siphon
  • Fuel Storage Container
Fuel Tools
  • Fuel Line Disconnect Tool
  • Fuel Pressure Tester
  • Fuel Filter Wrench

Maintenance

Service interval
Every 10,000 miles or 12 months
Service Items
  • Inspect Fuel Lines
  • Replace Fuel Filter
  • Check Fuel Pump Pressure
  • Clean Fuel Injectors
  • Inspect Fuel Tank for Leaks
Maintenance Notes
Use only recommended fuel types and additives. Avoid overfilling the fuel tank.

Warranty

Basic
Miles: 50,000
Years: 4
Coverage: Fuel Pump, Fuel Injectors
Emissions
Miles: 80,000
Years: 8
Coverage: Fuel Tank, Evaporative System
Corrosion
Miles: 100,000
Years: 10
Coverage: Fuel Tank, Fuel Lines
Extended
Miles: 120,000
Years: 12
Coverage: Fuel System Components
Warranty Terms
Coverage applies to defects in materials or workmanship. Excludes normal wear and tear.

Production Details

Manufacturer
Mercedes-Benz AG
Manufacturing Process
  • Precision Machining
  • Automated Assembly
  • Quality Testing
Quality Control
Pressure Testing: 200 psi
Leak Testing: 99.9% Accuracy
Material inspection: Certified Alloys
Sustainability Practices
  • Recycled Materials in Fuel Tank
  • Low-Emission Manufacturing
  • Energy-Efficient Production
Production Metrics
Annual Output: 500,000 Units
Defect Rate: 0.01%
Energy Consumption: 2 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 pump pressure
  • Replace fuel filter
  • Test fuel injector spray pattern

Use only manufacturer-approved fuel additives.

30,000
36
  • Clean fuel injectors
  • Inspect fuel tank for corrosion
  • Check fuel pressure regulator
  • Test fuel system for contamination

Perform a full fuel system diagnostic.

60,000
72
  • Replace fuel pump assembly
  • Inspect and clean fuel rail
  • Test fuel system for pressure drop
  • Replace fuel tank vent valve

Ensure proper sealing of all fuel system connections.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What type of fuel is compatible with the 2007-2014 Mercedes C-Class?

The 2007-2014 Mercedes C-Class is compatible with premium unleaded gasoline with an octane rating of 91 or higher. Using lower-octane fuel may result in reduced performance and engine knocking. Diesel models require ultra-low sulfur diesel (ULSD) with a cetane rating of at least 50. Always refer to the owner’s manual for specific fuel requirements and avoid using additives unless approved by Mercedes-Benz.

Q2

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

Regular maintenance of the fuel system includes inspecting and replacing the fuel filter every 30,000 to 40,000 miles. The fuel injectors should be cleaned every 15,000 miles to ensure optimal performance. Additionally, check for fuel leaks and ensure the fuel cap is properly sealed. Adhere to the manufacturer’s recommended service intervals for fuel system components to maintain efficiency and prevent costly repairs.

Q3

How do I replace the fuel filter in a 2007-2014 Mercedes C-Class?

To replace the fuel filter, first, locate it under the vehicle near the fuel tank. Disconnect the negative battery terminal for safety. Release fuel pressure by removing the fuel pump fuse and running the engine until it stalls. Disconnect the fuel lines and remove the old filter. Install the new filter, reconnect the fuel lines, and secure the filter in place. Reconnect the battery and start the engine to check for leaks.

Q4

What should I do if my Mercedes C-Class has poor fuel economy?

If your Mercedes C-Class has poor fuel economy, start by checking the air filter and replacing it if dirty. Inspect the fuel injectors for clogs and clean them if necessary. Ensure the tires are properly inflated and the alignment is correct. Use a diagnostic tool to check for error codes related to the fuel system or oxygen sensors. Regular maintenance and using the recommended fuel type can also improve fuel efficiency.

Q5

How can I optimize the fuel performance of my Mercedes C-Class?

To optimize fuel performance, use premium unleaded gasoline with an octane rating of 91 or higher. Regularly clean the fuel injectors and replace the air filter as needed. Maintain proper tire pressure and alignment to reduce rolling resistance. Avoid unnecessary idling and aggressive driving. Ensure the engine is tuned and all sensors, such as the oxygen sensor, are functioning correctly.

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 C-Class Owner’s Manual

Coming Soon

Provides detailed information on vehicle operation, maintenance schedules, and technical specifications for the 2007-2014 Mercedes C-Class.

Technical Service Bulletin: Fuel System Updates

Coming Soon

Covers updates and fixes for common fuel system issues in the 2007-2014 Mercedes C-Class, including fuel pump and injector improvements.

Mercedes C-Class Parts Catalog

Coming Soon

Lists all OEM parts and accessories for the 2007-2014 Mercedes C-Class, including fuel system components and maintenance kits.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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