BMW 750i 2008-2015

BMW 750i 2008-2015 Fuel System Specifications

Detailed technical specifications and guidelines for the fuel system of the 2008-2015 BMW 750i. Learn about fuel type requirements, fuel pressure, injector details, pump performance, and emission compliance.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2008-2015 BMW 750i, including key features, measurements, and technical details. This section provides essential information on fuel requirements, system components, and performance specifications.

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 major sections and subsections.

Key Specifications

Fuel Tank Capacity

21.7 gallons (82 liters)

Minimum Octane Rating

91 AKI

Fuel Pump Flow Rate

120 liters/hour

Combined Fuel Economy

18 mpg (7.7 km/L)

Fuel Injector Pressure

200 bar

Available Specifications

Fuel Requirements

This section outlines the recommended fuel type, octane rating, and additives for optimal performance and engine longevity.

Fuel Type and Octane Rating

Recommended fuel type: Premium unleaded gasoline
Minimum octane rating: 91 AKI (Anti-Knock Index)
Do not use gasoline with more than 10% ethanol (E10)
Avoid using diesel or alternative fuels
Use of lower octane fuel may result in reduced performance and engine knocking

Fuel Additives

BMW-approved fuel additives are recommended for maintaining fuel system cleanliness
Avoid using aftermarket additives not approved by BMW
Additives should not contain metallic compounds
Regular use of approved additives can prevent carbon buildup

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

Fuel System Components

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

Fuel Tank

Fuel tank capacity: 21.7 gallons (82 liters)
Material: High-density polyethylene (HDPE)
Includes an integrated fuel filter
Equipped with a venting system to prevent vapor lock
Designed to withstand high-pressure conditions

Fuel Pump and Injectors

Electric fuel pump with a flow rate of 120 liters per hour
High-pressure fuel injectors with a maximum pressure of 200 bar
Injectors feature precision-machined nozzles for optimal fuel atomization
Fuel pump is located inside the fuel tank for cooling purposes
System includes a fuel pressure regulator for consistent delivery

Fuel Consumption and Efficiency

This section provides information on fuel consumption rates, efficiency metrics, and factors affecting performance.

Fuel Economy

City fuel economy: 15 mpg (6.4 km/L)
Highway fuel economy: 23 mpg (9.8 km/L)
Combined fuel economy: 18 mpg (7.7 km/L)
Fuel consumption rate: 5.6 L/100 km (combined)
Efficiency is optimized for premium fuel usage

Factors Affecting Fuel Efficiency

Driving style: Aggressive acceleration reduces efficiency
Tire pressure: Underinflated tires increase fuel consumption
Load weight: Additional weight decreases fuel economy
Aerodynamics: Roof racks and open windows reduce efficiency
Maintenance: Regular servicing ensures optimal performance

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

Fuel System Maintenance

This section covers maintenance procedures and intervals for the fuel system to ensure reliability and performance.

Maintenance Schedule

Inspect fuel lines and connections every 30,000 miles (48,000 km)
Replace fuel filter every 60,000 miles (96,000 km)
Check fuel injectors for clogs or leaks during routine service
Clean fuel tank and pump every 100,000 miles (160,000 km)
Monitor fuel system pressure during diagnostics

Troubleshooting Common Issues

Symptoms of a failing fuel pump: Engine hesitation, difficulty starting, or stalling
Clogged injectors may cause rough idling or misfires
Fuel leaks can be identified by a strong gasoline odor
Check engine light may indicate fuel system faults
Diagnostic tools are required for accurate fault identification

Note: Address fuel system issues promptly to prevent further damage.

Search Specifications

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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) with reduced performance

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

Octane Rating: Minimum 91 AKI (Anti-Knock Index)

Notes: Using lower octane fuel may cause engine knocking and reduced performance

Fuel System

Fuel Delivery: Direct injection

Fuel Pump Pressure: 5.0 bar (72.5 psi)

Fuel Filter Part Number: 13 32 7 566 327

Fuel injector Part Number: 13 53 7 566 328

Notes: High-pressure fuel pump ensures precise fuel delivery for optimal combustion

Fuel Tank

Capacity: 21.7 gallons (82 liters)

Material: Plastic with integrated fuel level sensor

Fuel Level Sensor Part Number: 16 14 7 566 329

Notes: Tank designed to minimize evaporation and meet emissions standards

Fuel Consumption

City: 15 mpg (6.4 km/l)

Highway: 23 mpg (9.8 km/l)

Combined: 18 mpg (7.7 km/l)

Notes: Consumption varies based on driving conditions and fuel quality

Emissions

Emissions Standard: EU5 / ULEV II compliant

Catalytic Converter Part Number: 18 30 7 566 330

Oxygen Sensor Part Number: 11 78 7 566 331

Notes: System includes multiple sensors to monitor and reduce emissions

Fuel Additives

Recommended Additives

BMW Fuel System Cleaner (Part Number: 83 19 2 417 823)
Octane boosters for low-quality fuel

Usage instructions: Add to fuel tank every 10,000 miles or as needed

Notes: Additives help maintain injector cleanliness and fuel system performance

Fuel Pressure Regulator

Operating Pressure: 5.0 bar (72.5 psi)

Part Number: 13 54 7 566 332

Tolerance: +/- 0.2 bar (2.9 psi)

Notes: Ensures consistent fuel pressure for optimal engine performance

Fuel Pump

Type: Electric in-tank fuel pump

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

Part Number: 16 14 7 566 333

Notes: High-capacity pump ensures adequate fuel supply under all driving conditions

Fuel injectors

Type: Solenoid-operated direct injectors

Flow Rate: 200 cc/min at 3.0 bar (43.5 psi)

Part Number: 13 53 7 566 334

Notes: Precision injectors optimize fuel atomization for efficient combustion

Diagnostics

Fuel System Diagnostic Codes

P0171 (System too lean)
P0172 (System too rich)
P0181 (Fuel temperature sensor circuit)

Diagnostic Tool: BMW ISTA/D or compatible OBD-II scanner

Notes: Regular diagnostics recommended to detect fuel system issues early

Service Information Service

Detailed service requirements and schedules for the fuel system

10,000 miles

12 months

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

Replace fuel filter every 30,000 miles or as needed

30,000 miles

36 months

Replace fuel filter
Clean fuel injectors
Inspect fuel pump and pressure regulator

Use BMW-approved fuel system cleaner during service

60,000 miles

72 months

Replace fuel pump if necessary
Inspect and replace fuel injectors if needed
Check and replace oxygen sensors if required

Follow BMW-recommended procedures for fuel system maintenance

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2008-2015 BMW 750i?

The 2008-2015 BMW 750i requires premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and potential engine knocking.

What is the fuel tank capacity of the 2008-2015 BMW 750i?

The fuel tank capacity of the 2008-2015 BMW 750i is 21.7 gallons (82 liters). This allows for extended driving ranges between refueling.

Can I use ethanol-blended fuel in the 2008-2015 BMW 750i?

Yes, the 2008-2015 BMW 750i can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol concentrations (e.g., E15 or E85) are not recommended and may cause damage to the fuel system.

What is the fuel economy of the 2008-2015 BMW 750i?

The 2008-2015 BMW 750i has an EPA-estimated fuel economy of 15 mpg in the city and 22 mpg on the highway. Actual fuel economy may vary based on driving conditions and habits.

How often should I replace the fuel filter on the 2008-2015 BMW 750i?

The fuel filter on the 2008-2015 BMW 750i is designed to last the lifetime of the vehicle under normal driving conditions. However, if you experience fuel delivery issues or contamination, it may need to be replaced. Consult your BMW service manual or a certified technician for guidance.

What happens if I use the wrong type of fuel in my BMW 750i?

Using fuel with an octane rating lower than 91 or fuels with high ethanol content can lead to engine knocking, reduced performance, and potential damage to the fuel system. Always use premium unleaded gasoline with the recommended octane rating.

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

A detailed guide on maintaining the fuel system of the 2008-2015 BMW 750i, including fuel filter replacement and fuel injector cleaning.

Understanding Octane Ratings and Fuel Types

Coming Soon

An educational resource explaining octane ratings, fuel types, and their impact on vehicle performance, specifically tailored for BMW vehicles.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine fuel system components for the 2008-2015 BMW 750i.

Fuel Efficiency Tips for BMW 750i Owners

Coming Soon

Practical tips and driving techniques to maximize fuel efficiency and reduce fuel consumption in the 2008-2015 BMW 750i.

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