BMW 540i 2017-present

BMW 540i 2017-present Fuel System Specifications

Explore the detailed fuel system specifications for the 2017-Present BMW 540i, including fuel type requirements, injector details, pressure parameters, and maintenance tips. This guide is essential for technicians and enthusiasts.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2017-Present BMW 540i, including key features, measurements, and technical details. This section provides essential information on fuel requirements, system components, and performance specifications 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 system pressure'.

Navigate through the fuel documentation sections using the table of contents or by scrolling through the document. Each major section is labeled with a clear title and includes subsections for detailed information.

Key Specifications

Fuel Type

Premium unleaded (91 AKI or higher)

Fuel Tank Capacity

18.0 gallons (68.1 liters)

Fuel Pump Pressure

2,900 psi (200 bar)

Combined Fuel Economy

24 mpg (9.8 L/100 km)

CO2 Emissions

220 g/km (combined)

Available Specifications

Fuel Type and Quality

This section covers the recommended fuel type, octane rating, and quality standards for the BMW 540i to ensure optimal engine performance and longevity.

Recommended Fuel Type

Premium unleaded gasoline with an octane rating of 91 AKI (Anti-Knock Index) or higher
Minimum octane rating of 89 AKI is acceptable but may reduce performance
Do not use gasoline with more than 10% ethanol (E10)
Avoid using diesel or alternative fuels not specified by BMW

Fuel Additives

BMW recommends against using aftermarket fuel additives
Fuel system cleaners approved by BMW may be used sparingly
Avoid additives containing metal compounds or silicone
Use only BMW-approved fuel stabilizers for long-term storage

Note: Using improper fuel additives may void the vehicle's warranty.

Fuel System Specifications

This section provides detailed technical specifications for the fuel system, including fuel tank capacity, fuel pump pressure, and injector flow rates.

Fuel Tank Capacity

Total fuel tank capacity: 18.0 gallons (68.1 liters)
Reserve fuel capacity: 2.5 gallons (9.5 liters)
Fuel tank material: High-density polyethylene (HDPE)
Fuel tank design: Dual-chamber for improved safety and efficiency

Fuel Pump and Pressure

High-pressure fuel pump operating pressure: 2,900 psi (200 bar)
Low-pressure fuel pump flow rate: 150 liters per hour (L/h)
Fuel pressure regulator: Integrated into the fuel pump module
Fuel filter: Integrated into the fuel pump assembly

Fuel Consumption and Efficiency

This section outlines the fuel consumption rates and efficiency metrics for the BMW 540i under various driving conditions.

City and Highway Fuel Economy

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 class: EPA-rated as a mid-size luxury sedan

CO2 Emissions

CO2 emissions: 220 g/km (combined)
Complies with Euro 6 and EPA Tier 3 emissions standards
Equipped with an active carbon filter for reduced evaporative emissions
Includes BMW EfficientDynamics technology for improved efficiency

Fuel System Maintenance

This section provides guidelines for maintaining the fuel system, including inspection intervals, cleaning procedures, and troubleshooting tips.

Fuel System Inspection

Inspect fuel lines and connections every 10,000 miles (16,000 km)
Check fuel filter condition during routine maintenance
Monitor fuel pressure using BMW diagnostic tools
Inspect fuel injectors for clogging or wear every 30,000 miles (48,000 km)

Fuel System Cleaning

Clean fuel injectors using BMW-approved cleaning solutions
Perform fuel system flush every 60,000 miles (96,000 km)
Replace fuel filter every 50,000 miles (80,000 km)
Use only OEM parts for fuel system repairs and replacements

Note: Improper cleaning procedures may damage the fuel system components.

Search Specifications

Search by specification name, value, or description

Component Specifications

Fuel Type

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

Minimum Octane Rating: 89 AKI (87 RON)

Ethanol Content: Up to 10% (E10)

Note: Using fuel with lower octane than recommended may reduce performance and fuel efficiency.

Fuel System

Type: Direct injection

injection Pressure: 200 bar (2900 psi)

Fuel Pump Type: Electric high-pressure fuel pump

Fuel Pump Part Number: 16148659821

Fuel Filter Part Number: 13327803845

Note: Fuel filter is integrated into the fuel pump module and is non-serviceable separately.

Fuel Tank

Capacity: 18.0 gallons (68.1 liters)

Material: Plastic with integrated rollover valve

Fuel Level Sensor Type: Float-type with integrated diagnostics

Part Number: 16117353890

Note: Fuel tank includes a venting system to prevent vapor lock and ensure proper fuel delivery.

Fuel injectors

Type: Solenoid-operated direct injectors

Flow Rate: 15.0 cc/min at 3.0 bar (43.5 psi)

Part Number: 13647596123

injector Seal Part Number: 13537585291

Note: Injectors are calibrated for precise fuel delivery and require no routine maintenance.

Fuel Pressure Regulator

Type: Integrated into high-pressure fuel pump

Operating Pressure: 50-200 bar (725-2900 psi)

Tolerance: +/- 5 bar (72.5 psi)

Note: Pressure is regulated based on engine load and RPM for optimal performance.

Fuel Quality Sensor

Type: Integrated into fuel delivery module

Function: Monitors ethanol content and fuel quality

Part Number: 16148659822

Note: Sensor data is used to adjust engine parameters for optimal combustion.

Emissions Compliance

Standards: LEV III, Euro 6

Evaporative Emissions System: Sealed system with charcoal canister

Charcoal Canister Part Number: 16148659823

Note: System includes onboard diagnostics (OBD) for emissions monitoring.

Fuel Economy

City: 22 mpg (10.7 L/100 km)

Highway: 30 mpg (7.8 L/100 km)

Combined: 25 mpg (9.4 L/100 km)

Note: Economy figures are based on EPA testing with premium fuel.

Diagnostics

Obd Ii Codes: P0171: System too lean
P0172: System too rich
P0181: Fuel temperature sensor circuit range/performance
P0191: Fuel rail pressure sensor circuit range/performance

Note: Diagnostic trouble codes (DTCs) related to the fuel system can be read using BMW-specific diagnostic tools.

Maintenance

Fuel Filter Replacement: Integrated into fuel pump, no separate replacement interval

Fuel injector Cleaning: Not required under normal conditions

Fuel System inspection: Every 30,000 miles (48,280 km) or 24 months

Note: Use only BMW-approved fuel additives if necessary.

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 tank and cap for damage
Verify fuel system pressure and performance

Service intervals may vary based on driving conditions and fuel quality.

60,000 miles

48 months

Inspect fuel pump and filter module
Check fuel injectors for proper operation
Perform fuel system diagnostic scan

Replace fuel pump module if diagnostics indicate failure.

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2017-Present BMW 540i?

The BMW 540i requires premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and efficiency.

What is the fuel tank capacity of the BMW 540i?

The fuel tank capacity of the BMW 540i is 18.0 gallons (68.1 liters). This allows for extended driving ranges between refueling.

Can I use ethanol-blended fuel in the BMW 540i?

Yes, the BMW 540i can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol content, such as E85, are not recommended and may cause engine damage.

What is the fuel economy of the BMW 540i?

The BMW 540i achieves an EPA-estimated fuel economy of 22 mpg in the city and 30 mpg on the highway, with a combined rating of 25 mpg. Actual mileage may vary based on driving conditions and habits.

Does the BMW 540i have a fuel-saving start-stop feature?

Yes, the BMW 540i is equipped with an Auto Start-Stop function that automatically shuts off the engine when the vehicle is stationary to save fuel. The engine restarts when the brake pedal is released.

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 Overview

Coming Soon

Detailed guide on the fuel system components and maintenance for the BMW 540i, including fuel injectors, pumps, and filters.

Fuel Efficiency Tips for BMW Vehicles

Coming Soon

Learn how to maximize fuel efficiency and reduce emissions with proper driving techniques and maintenance practices.

BMW Genuine Fuel Additives

Coming Soon

Information on BMW-approved fuel additives to maintain engine performance and cleanliness.

BMW Warranty and Fuel System Coverage

Coming Soon

Understand the warranty implications of using non-recommended fuels and how to maintain coverage for your BMW 540i.

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.