BMW 640i 2011-2018

BMW 640i 2011-2018 Fuel System Specifications

Detailed technical guide for the 2011-2018 BMW 640I fuel system, including fuel type, pressure, injector, and pump specifications. Ideal for diagnostics, repairs, and performance tuning.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2011-2018 BMW 640I, including key features, measurements, and technical details. This section provides detailed information on fuel requirements, system components, and performance metrics to ensure optimal vehicle operation.

How to Use

Use the search function to locate specific fuel specifications by entering keywords such as 'fuel type', 'octane rating', or 'fuel tank capacity'.

Navigate through the fuel documentation sections using the table of contents or by scrolling through the document. Each major section is labeled for easy reference.

Key Specifications

Fuel Tank Capacity

18.5 gallons (70 liters)

Minimum Octane Rating

91 AKI

Fuel Pump Flow Rate

120 liters/hour

CO2 Emissions

185 g/km

Combined Fuel Economy

24 mpg (9.8 L/100 km)

Available Specifications

Fuel Requirements

This section outlines the fuel type, octane rating, and additives recommended for the BMW 640I to ensure optimal engine performance and longevity.

Fuel Type and Octane Rating

Recommended fuel type: Premium unleaded gasoline
Minimum octane rating: 91 AKI (Anti-Knock Index)
Maximum ethanol content: 10% (E10)
Do not use fuels with methanol or MMT additives

Fuel Additives

BMW-approved fuel additives are recommended for cleaning the fuel system
Avoid aftermarket additives not approved by BMW
Additives should not contain metallic compounds
Use additives sparingly and as directed

Note: Using non-recommended additives may void the vehicle warranty.

Fuel System Components

This section details the key components of the fuel system, including the fuel tank, fuel pump, and injectors, along with their specifications and maintenance requirements.

Fuel Tank

Fuel tank capacity: 18.5 gallons (70 liters)
Material: High-density polyethylene (HDPE)
Includes an integrated fuel level sensor
Designed for minimal evaporative emissions

Fuel Pump and Injectors

Electric fuel pump with a flow rate of 120 liters per hour
High-pressure direct fuel injectors with a pressure range of 200-250 bar
Injectors feature precision-machined nozzles for optimal fuel atomization
Fuel pump is located inside the fuel tank for cooling and noise reduction

Fuel Efficiency and Emissions

This section provides information on the vehicle's fuel efficiency, emissions standards, and environmental impact.

Fuel Efficiency

City fuel economy: 20 mpg (11.8 L/100 km)
Highway fuel economy: 30 mpg (7.8 L/100 km)
Combined fuel economy: 24 mpg (9.8 L/100 km)
Fuel efficiency may vary based on driving conditions and maintenance

Emissions Standards

Complies with Euro 6 emissions standards
Equipped with a catalytic converter and oxygen sensors
NOx emissions: Less than 0.06 g/km
CO2 emissions: 185 g/km

Note: Regular maintenance is required to maintain emissions compliance.

Search Specifications

Search by specification name, value, or description

Component Specifications

Fuel Type

Recommended Fuel: Premium unleaded gasoline (91 AKI or 95 RON)

Minimum Fuel: Regular unleaded gasoline (87 AKI or 91 RON)

Ethanol Content: Up to 10% ethanol (E10)

Notes: Using fuel with higher ethanol content may void warranty

Fuel Tank

Capacity: 18.5 gallons (70 liters)

Material: High-density polyethylene

Part Number: 16117307745

Pressure Rating: 3.0 bar (43.5 psi)

Notes: Includes integrated fuel pump and level sensor

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 120 liters per hour (31.7 gallons per hour)

Pressure: 5.0 bar (72.5 psi)

Part Number: 16147183709

Voltage: 12V DC

Notes: Includes fuel filter and pressure regulator

Fuel injectors

Type: Direct injection (DI)

Flow Rate: 200 cc/min at 3.0 bar

Part Number: 13647596163

Spray Pattern: Multi-hole

Opening Pressure: 150 bar (2175 psi)

Notes: Requires periodic cleaning to maintain performance

Fuel Filter

Type: Integrated with fuel pump

Part Number: 16147183709

Filtration Level: 10 microns

Replacement interval: Every 60,000 miles (96,000 km)

Notes: Non-serviceable, replace entire fuel pump assembly

Fuel Pressure Sensor

Type: Piezoelectric

Part Number: 13627838017

Pressure Range: 0-10 bar (0-145 psi)

Output Signal: 0.5-4.5V

Notes: Monitors fuel rail pressure for optimal engine performance

Fuel Rail

Material: Stainless steel

Part Number: 13537585291

Pressure Rating: 200 bar (2900 psi)

Notes: Includes integrated pressure sensor and injector ports

Fuel System Cleaning

Recommended interval: Every 30,000 miles (48,000 km)

Cleaning Method: Fuel system cleaner additive

Notes: Use BMW-approved fuel system cleaner for best results

Fuel Economy

City: 20 mpg (11.8 L/100 km)

Highway: 30 mpg (7.8 L/100 km)

Combined: 24 mpg (9.8 L/100 km)

Notes: Based on EPA estimates, actual mileage may vary

Diagnostic Codes

Common Codes

P0171 - System too lean
P0172 - System too rich
P0190 - Fuel rail pressure sensor circuit malfunction
P0087 - Fuel rail/system pressure too low
P0088 - Fuel rail/system pressure too high

Notes: Use BMW ISTA/D diagnostic software for accurate troubleshooting

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000 miles

24 months

Inspect fuel lines and connections for leaks
Check fuel filter condition
Perform fuel system cleaning

Use BMW-approved fuel system cleaner

60,000 miles

48 months

Replace fuel filter (if applicable)
Inspect fuel pump performance
Check fuel injector operation

Replace fuel pump assembly if necessary

100,000 miles

84 months

Replace fuel injectors (if necessary)
Inspect fuel tank for damage or leaks
Perform comprehensive fuel system diagnostic

Follow BMW service guidelines for replacement parts

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2011-2018 BMW 640i?

The 2011-2018 BMW 640i requires premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and engine knocking.

What is the fuel tank capacity of the 2011-2018 BMW 640i?

The fuel tank capacity of the 2011-2018 BMW 640i is 18.5 gallons (70 liters). This allows for a driving range of approximately 400-500 miles depending on driving conditions and fuel efficiency.

What is the fuel economy of the 2011-2018 BMW 640i?

The 2011-2018 BMW 640i has an EPA-estimated fuel economy of 20 mpg in the city and 30 mpg on the highway. Actual fuel economy may vary based on driving habits, road conditions, and vehicle maintenance.

Can I use ethanol-blended fuel in the 2011-2018 BMW 640i?

The 2011-2018 BMW 640i is compatible with ethanol-blended fuels containing up to 10% ethanol (E10). Using fuels with higher ethanol content may damage the fuel system and void the warranty.

What should I do if I accidentally use the wrong type of fuel?

If you accidentally use the wrong type of fuel, do not start the engine. Contact a BMW-certified technician immediately to drain and flush the fuel system. Starting the engine with incorrect fuel may cause severe damage.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

BMW Fuel System Maintenance Guide

Coming Soon

Detailed guide on maintaining the fuel system, including fuel filter replacement and injector cleaning procedures.

BMW Fuel Efficiency Tips

Coming Soon

Tips and best practices for maximizing fuel efficiency in your BMW 640i, including driving habits and maintenance schedules.

BMW Fuel Specifications and Compatibility

Coming Soon

Comprehensive overview of fuel specifications, including octane ratings, ethanol content, and compatibility for BMW vehicles.

BMW Warranty and Fuel System Coverage

Coming Soon

Information on how using incorrect fuel or non-genuine parts may affect your BMW warranty and fuel system coverage.

About the Author

Expert automotive knowledge and experience

ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

Facebook Contact

15+ Years

Experience

500+ Guides

Guides

50+ Makes

Vehicles

1000+ Solutions

Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

ASE Master Technician Certification
Advanced Diagnostic Specialist
Hybrid/Electric Vehicle Systems
Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information

The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.

Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

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.

Intellectual Property

All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.