BMW 745i 2020-present

BMW 745i 2020-present Fuel System Specifications

Detailed technical specifications for the fuel system of the 2020-Present BMW 745I, covering fuel type, fuel delivery, injector details, pressure requirements, and emission standards.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2020-Present BMW 745i, including key features, measurements, and technical details

How to Use

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

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 min)

Fuel Tank Capacity

18.0 gallons (68.1 liters)

Combined Fuel Economy

23 mpg (10.2 L/100 km)

CO2 Emissions

172 g/km

Fuel System Pressure

50-60 psi (3.4-4.1 bar)

Available Specifications

Fuel Type and Quality

This section covers the recommended fuel type, quality standards, and octane rating for optimal performance and engine longevity.

Recommended Fuel Type

Premium unleaded gasoline with a minimum octane rating of 91 AKI (Anti-Knock Index)
BMW recommends using TOP TIER™ detergent gasoline for enhanced engine cleanliness
Ethanol content should not exceed 10% (E10)
Avoid using diesel or alternative fuels not specified by BMW

Octane Rating and Performance

Minimum octane rating: 91 AKI (95 RON)
Optimal performance achieved with 93 AKI (98 RON)
Lower octane fuels may result in reduced power output and increased engine knocking
Engine control system adapts to lower octane fuels but with reduced efficiency

Note: Using fuel with an octane rating below 91 AKI may void the vehicle's warranty.

Fuel System and Capacity

Details about the fuel system design, tank capacity, and fuel delivery mechanisms for the BMW 745i.

Fuel Tank Capacity

Total fuel tank capacity: 18.0 gallons (68.1 liters)
Reserve fuel capacity: 2.5 gallons (9.5 liters)
Fuel gauge accuracy: ±3% under normal operating conditions
Low fuel warning light activates at approximately 2.0 gallons (7.6 liters) remaining

Fuel Delivery System

Direct fuel injection system with high-pressure injectors
Fuel pump pressure: 50-60 psi (3.4-4.1 bar)
Electronic fuel management system for precise fuel delivery
Integrated fuel filter with a service interval of 30,000 miles (48,280 km)

Note: Regular maintenance of the fuel system is essential to prevent clogging and ensure optimal performance.

Emission Standards and Efficiency

Information on the vehicle's compliance with emission standards and fuel efficiency metrics.

Emission Compliance

Complies with Euro 6d-TEMP and ULEV (Ultra Low Emission Vehicle) standards
Equipped with a particulate filter and catalytic converter
CO2 emissions: 172 g/km (combined cycle)
NOx emissions: 0.02 g/km (under WLTP testing conditions)

Fuel Efficiency

City fuel economy: 20 mpg (11.8 L/100 km)
Highway fuel economy: 29 mpg (8.1 L/100 km)
Combined fuel economy: 23 mpg (10.2 L/100 km)
Range: Approximately 414 miles (666 km) on a full tank

Note: Fuel efficiency may vary based on driving conditions, load, and maintenance.

Fuel Additives and Maintenance

Guidelines on the use of fuel additives and maintenance practices to ensure optimal fuel system performance.

Fuel Additives

BMW-approved fuel additives can be used to clean injectors and reduce carbon buildup
Avoid using additives containing methanol or silicone
Additives should be used sparingly and as per manufacturer recommendations
Regular use of TOP TIER™ gasoline reduces the need for additional additives

Maintenance Practices

Inspect fuel lines and connections for leaks during routine maintenance
Replace fuel filter every 30,000 miles (48,280 km)
Monitor fuel system performance using onboard diagnostics
Ensure fuel cap is securely tightened to prevent evaporative emissions

Note: Improper maintenance can lead to reduced fuel efficiency and increased emissions.

Search Specifications

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Component Specifications

Fuel Type

Recommended Fuel: Premium Unleaded Gasoline (91 AKI or higher)

Minimum Fuel: Regular Unleaded Gasoline (87 AKI)

Ethanol Content: Up to 10% (E10)

Notes: Using fuel with less than 91 AKI may reduce performance and fuel efficiency.

Fuel Tank

Capacity: 18.0 gallons (68.1 liters)

Material: High-density polyethylene

Part Number: 16117359901

Pressure Rating: 3.0 psi (20.7 kPa)

Notes: Includes integrated fuel pump and level sensor.

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 150 liters per hour (LPH)

Pressure: 5.0 bar (72.5 psi)

Part Number: 16148658763

Voltage: 12V DC

Notes: Includes fuel filter and pressure regulator.

Fuel injectors

Type: Direct injection

Flow Rate: 15.0 cc per second

Pressure: 200 bar (2900 psi)

Part Number: 13537585291

Notes: High-pressure injectors for precise fuel delivery.

Fuel Filter

Type: Integrated with fuel pump

Replacement interval: Every 60,000 miles (96,560 km)

Part Number: 16148658763

Notes: Non-serviceable; replace as part of fuel pump assembly.

Fuel Pressure Sensor

Type: High-pressure sensor

Operating Range: 0 to 250 bar (0 to 3625 psi)

Part Number: 13627838372

Voltage: 5V DC

Notes: Monitors fuel rail pressure for optimal engine performance.

Fuel Rail

Material: Stainless steel

Pressure Rating: 250 bar (3625 psi)

Part Number: 13537585290

Notes: Designed for high-pressure direct injection systems.

Fuel System Diagnostics

Diagnostic Tool: BMW ISTA or compatible OBD-II scanner

Error Codes

P0171 - System too lean
P0172 - System too rich
P0190 - Fuel rail pressure sensor circuit malfunction

Notes: Regularly check for fuel system error codes during service.

Fuel System Maintenance

injector Cleaning Interval: Every 30,000 miles (48,280 km)

Fuel Additive: BMW Fuel System Cleaner (part number: 82141467704)

Notes: Use BMW-approved additives to maintain injector performance.

Fuel System Safety

Fire Hazard: Avoid open flames or sparks near fuel system components

Pressure Release: Depressurize fuel system before servicing

Notes: Follow BMW service manual procedures for safe fuel system maintenance.

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000 miles

24 months

Inspect fuel lines and connections
Check fuel injectors for leaks
Perform fuel system diagnostic scan

Use BMW-approved diagnostic tools for accurate results.

60,000 miles

48 months

Replace fuel filter (if applicable)
Clean fuel injectors
Inspect fuel pump performance

Replace fuel pump assembly if performance issues are detected.

100,000 miles

84 months

Replace fuel pump assembly
Inspect and clean fuel tank
Perform comprehensive fuel system diagnostic

Follow BMW-recommended procedures for fuel system overhaul.

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2020-Present BMW 745i?

The 2020-Present BMW 745i 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 745i?

The BMW 745i has a fuel tank capacity of 18.0 gallons (68.1 liters). This allows for extended driving ranges, especially when combined with the vehicle's efficient fuel consumption.

What is the fuel consumption rate for the BMW 745i?

The BMW 745i achieves an estimated fuel consumption of 20 MPG in the city and 29 MPG on the highway, with a combined rating of 23 MPG. These figures may vary based on driving conditions and habits.

Can I use ethanol-blended fuel in the BMW 745i?

The BMW 745i is compatible with ethanol-blended fuels containing up to 10% ethanol (E10). Using fuels with higher ethanol content may damage the engine and void the warranty.

What happens if I use diesel or the wrong fuel type in the BMW 745i?

Using diesel or an incorrect fuel type in the BMW 745i can cause severe engine damage, fuel system contamination, and potential safety hazards. If this occurs, do not start the engine and contact a BMW-certified technician immediately.

Does the BMW 745i have a fuel-saving start-stop feature?

Yes, the BMW 745i is equipped with an Auto Start-Stop function that automatically shuts off the engine when the vehicle is stationary (e.g., at traffic lights) to reduce fuel consumption and emissions.

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, operation, and maintenance for the BMW 745i.

Fuel Efficiency Tips for BMW Vehicles

Coming Soon

Learn how to maximize fuel efficiency and reduce emissions for your BMW 745i.

BMW Fuel Specifications and Compatibility

Coming Soon

Official BMW documentation on fuel types, octane ratings, and ethanol compatibility for the 745i.

BMW Warranty and Fuel-Related Issues

Coming Soon

Understand how using incorrect fuel types or additives can impact your BMW warranty.

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