BMW 440i 2017-present

BMW 440i 2017-present Fuel System Specifications

Detailed technical guide for the 2017-Present BMW 440i fuel system, covering fuel type, pressure, injector specs, and pump performance. Essential for maintenance and repair.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2017-Present BMW 440i, 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 tank capacity'. Filter results by section for precise information.

Navigate through the fuel documentation sections using the table of contents. Each major section is divided into subsections for detailed technical information.

Key Specifications

Fuel Type

Premium unleaded gasoline (91 AKI min)

Fuel Tank Capacity

15.8 gallons (60 liters)

Fuel Pump Pressure

2,900 psi (200 bar)

Combined Fuel Economy

26 mpg (9.0 L/100 km)

CO2 Emissions

189 g/km

Available Specifications

Fuel Requirements

This section outlines the fuel type, octane rating, and additives required for the BMW 440i to ensure optimal engine performance and longevity.

Fuel Type and Octane Rating

Premium unleaded gasoline with a minimum octane rating of 91 AKI (Anti-Knock Index)
Recommended octane rating of 93 AKI for maximum performance
Do not use gasoline with an octane rating below 89 AKI to prevent engine knocking
Ethanol content should not exceed 10% (E10)

Fuel Additives

Use only BMW-approved fuel additives to maintain fuel system cleanliness
Avoid additives containing methanol or metallic compounds
Additives should comply with BMW specification B00 04 0
Regular use of additives is not required unless specified by BMW

Note: Using non-approved additives may void the vehicle's warranty.

Fuel System Components

This section details the key components of the BMW 440i fuel system, including the fuel tank, fuel pump, and injectors.

Fuel Tank

Fuel tank capacity: 15.8 gallons (60 liters)
Material: High-density polyethylene (HDPE) for durability and corrosion resistance
Includes an integrated fuel level sensor for accurate fuel monitoring
Designed to withstand pressures up to 10 psi (0.7 bar)

Fuel Pump and Injectors

High-pressure fuel pump with a maximum pressure of 2,900 psi (200 bar)
Direct fuel injection system for precise fuel delivery
Injector flow rate: 1,000 cc/min at 100 bar
Fuel pump power consumption: 80 watts

Note: The fuel pump is located inside the fuel tank for improved cooling and noise reduction.

Fuel Economy and Emissions

This section provides information on the BMW 440i's fuel efficiency and emissions compliance.

Fuel Economy

City fuel economy: 22 mpg (10.7 L/100 km)
Highway fuel economy: 32 mpg (7.4 L/100 km)
Combined fuel economy: 26 mpg (9.0 L/100 km)
Range: Approximately 410 miles (660 km) on a full tank

Emissions Compliance

Complies with Euro 6 and ULEV (Ultra Low Emission Vehicle) standards
CO2 emissions: 189 g/km
Equipped with a catalytic converter and particulate filter
NOx emissions: 0.02 g/km

Note: Regular maintenance is required to maintain emissions compliance.

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Component Specifications

Fuel Type

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

Alternative Fuel: Regular unleaded gasoline (87 AKI or 91 RON minimum) with reduced performance

Ethanol Content: Up to 10% ethanol (E10) allowed

Octane Rating: 91 AKI (95 RON) minimum for optimal performance

Fuel System

System Type: Direct injection (DI)

Fuel Pump Type: Electric high-pressure fuel pump

Fuel Pump Pressure: 200-2000 psi (13.8-137.9 bar)

injector Type: Solenoid-operated direct fuel injectors

injector Flow Rate: 15-20 cc/min at 100 psi (6.9 bar)

Fuel Tank

Capacity: 15.8 gallons (60 liters)

Material: High-density polyethylene (HDPE)

Part Number: 16117348375

Vent System: Closed-loop evaporative emission control system

Fuel Filter

Type: In-tank integrated fuel filter

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

Part Number: 16127183729

Filter Micron Rating: 10 microns

Fuel Pressure

Low Pressure System: 58-87 psi (4-6 bar)

High Pressure System: 1450-2900 psi (100-200 bar)

Pressure Sensor Type: Piezoresistive sensor

Pressure Tolerance: ±5% of specified value

Emissions Compliance

Standards: EPA Tier 3, Euro 6

Evaporative Emissions: Less than 0.05 g/mile

Carbon Monoxide: Less than 1.0 g/mile

Nitrogen Oxides: Less than 0.02 g/mile

Fuel Additives

Recommended Additives: BMW Fuel System Cleaner (part number 82140407459)

Usage interval: Every 10,000 miles (16,000 km)

Additive Capacity: 12 oz (355 ml) per tank

Diagnostic Specifications

Fuel System Monitoring: Onboard Diagnostics (OBD-II) compliant

Fault Codes

P0171
P0172
P0174
P0175
P0181
P0182

Diagnostic Tool: BMW ISTA or compatible OBD-II scanner

Pressure Test interval: Every 30,000 miles (48,000 km)

Operational Limits

Max Fuel Temperature: 140°F (60°C)

Min Fuel Temperature: -40°F (-40°C)

Fuel System Leak Limit: Less than 0.02 inHg (0.5 kPa) pressure drop in 5 minutes

Maintenance Specifications

Fuel System Cleaning: Recommended every 30,000 miles (48,000 km)

injector Cleaning Interval: Every 60,000 miles (96,000 km)

Fuel Pump inspection: Every 100,000 miles (160,000 km)

Fuel Tank inspection: Every 150,000 miles (240,000 km)

Service Information Service

Detailed service requirements and schedules for the fuel system

10,000 miles

12 months

Inspect fuel lines and connections
Check fuel pressure
Add fuel system cleaner

Use BMW-approved fuel system cleaner

30,000 miles

36 months

Inspect fuel filter
Perform fuel system pressure test
Check for fuel leaks

Replace fuel filter if necessary

60,000 miles

72 months

Replace fuel filter
Clean fuel injectors
Inspect fuel pump

Use OEM parts for replacement

100,000 miles

120 months

Inspect and test fuel pump
Check fuel tank for damage
Replace fuel pressure sensor if necessary

Perform full fuel system diagnostic

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2017-Present BMW 440i?

The BMW 440i requires premium unleaded gasoline with an octane rating of 91 AKI (95 RON) or higher. Using lower octane fuel may result in reduced performance and efficiency.

What is the fuel tank capacity of the BMW 440i?

The fuel tank capacity of the BMW 440i is 15.8 gallons (60 liters). This allows for a driving range of approximately 400-500 miles depending on driving conditions and fuel efficiency.

Can I use ethanol-blended fuel in the BMW 440i?

Yes, the BMW 440i can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol content, such as E85, are not recommended as they can damage the fuel system and engine components.

What is the fuel economy of the BMW 440i?

The BMW 440i achieves an EPA-estimated fuel economy of 22 mpg in the city and 32 mpg on the highway. Actual fuel economy may vary based on driving habits, road conditions, and vehicle maintenance.

Does the BMW 440i have a fuel filter that needs regular replacement?

The BMW 440i is equipped with a lifetime fuel filter integrated into the fuel pump module. It does not require regular replacement under normal operating conditions. However, if fuel contamination is suspected, the filter should be inspected and replaced if necessary.

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 injector cleaning and fuel pump inspection.

Understanding Octane Ratings

Coming Soon

Explains the importance of octane ratings and how they affect engine performance in BMW vehicles.

Ethanol-Blended Fuels and Your BMW

Coming Soon

Information on the effects of ethanol-blended fuels on BMW engines and fuel systems.

BMW Fuel Efficiency Tips

Coming Soon

Tips and techniques to maximize fuel efficiency in your BMW 440i.

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