BMW X3 2017-2021

BMW X3 2017-2021 Fuel System Specifications

Comprehensive technical guide for the 2017-2021 BMW X3 fuel system, including fuel type, tank capacity, pump and injector details, and emission compliance. Essential for maintenance and troubleshooting.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2017-2021 BMW X3, 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 tank capacity', or 'fuel type'.

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

Key Specifications

Fuel Tank Capacity

17.7 gallons (67 liters)

Recommended Octane Rating

91 or higher

Fuel Pressure

2,900 psi (200 bar)

Combined Fuel Economy

24 mpg (9.8 L/100 km)

CO2 Emissions

278 g/mile (173 g/km)

Available Specifications

Fuel Type and Quality

This section covers the recommended fuel types, octane ratings, and fuel quality requirements for optimal performance.

Recommended Fuel Type

Use premium unleaded gasoline with an octane rating of 91 or higher
Minimum octane rating of 89 is acceptable but may reduce performance
Avoid using gasoline with more than 10% ethanol (E10)
Do not use diesel or alternative fuels unless specified

Fuel Additives

BMW recommends against using aftermarket fuel additives
Use only BMW-approved fuel system cleaners if necessary
Avoid additives containing metal compounds
Ensure additives are compatible with catalytic converters

Note: Using improper additives may void the vehicle warranty.

Fuel System Specifications

Detailed technical specifications for the fuel system, including tank capacity, fuel delivery, and pressure requirements.

Fuel Tank Capacity

Total fuel tank capacity: 17.7 gallons (67 liters)
Reserve fuel capacity: 2.6 gallons (10 liters)
Fuel tank material: High-density polyethylene
Fuel tank design: Dual-chamber for improved safety

Fuel Delivery System

Direct fuel injection system with high-pressure pump
Fuel pressure: 2,900 psi (200 bar)
Injector type: Piezo-electric for precise fuel delivery
Fuel filter integrated into the fuel pump module

Fuel Efficiency and Emissions

Information on fuel efficiency ratings, emissions standards, and environmental considerations.

Fuel Efficiency

City fuel economy: 21 mpg (11.2 L/100 km)
Highway fuel economy: 28 mpg (8.4 L/100 km)
Combined fuel economy: 24 mpg (9.8 L/100 km)
CO2 emissions: 278 g/mile (173 g/km)

Emissions Compliance

Meets EPA Tier 3 emissions standards
Euro 6d-TEMP compliant for European models
Equipped with dual catalytic converters
Includes onboard diagnostics (OBD-II) for emissions monitoring

Note: Emissions performance may vary based on fuel quality and driving conditions.

Search Specifications

Search by specification name, value, or description

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% ethanol (E10)

Notes: Using fuel with higher ethanol content may void warranty

Fuel Tank

Capacity: 17.7 gallons (67 liters)

Material: High-density polyethylene

Part Number: 16117359901

Cross Reference: Fuel pump module, fuel level sensor

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 120 liters per hour (LPH)

Pressure: 5.0 bar (72.5 psi)

Part Number: 16148658902

Operational Temperature: -40°C to 120°C (-40°F to 248°F)

Fuel injectors

Type: Direct injection

Flow Rate: 200 cc/min at 3.0 bar

Part Number: 13537586903

Tolerances: ±2% flow variance

Cross Reference: High-pressure fuel pump, fuel rail

Fuel Filter

Type: Integrated in-tank filter

Replacement interval: Every 60,000 miles or 60 months

Part Number: 16117159904

Notes: Non-serviceable, replace with fuel pump assembly

Fuel Pressure

Low Pressure System: 5.0 bar (72.5 psi)

High Pressure System: 200 bar (2900 psi)

Tolerances: ±0.5 bar for low pressure, ±10 bar for high pressure

Sensor Part Number: 13627859905

Fuel Economy

City: 21 mpg

Highway: 28 mpg

Combined: 24 mpg

Notes: Based on EPA estimates for 2017-2021 BMW X3 xDrive30i

Emissions Compliance

Standard: Tier 3 Bin 30

Evaporative Emissions: 0.020 g/mile

Notes: Complies with U.S. EPA and CARB regulations

Fuel System Maintenance

injector Cleaning Interval: Every 30,000 miles

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

Notes: Use only BMW-approved additives to avoid damage

Diagnostic Specifications

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

Fuel Level Sensor Resistance: 10-180 ohms

Fault Codes

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

Notes: Use BMW ISTA diagnostic software for accurate fault code reading

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000 miles

30 months

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

Use only BMW-approved fuel system cleaner

60,000 miles

60 months

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

Fuel filter is integrated with the fuel pump assembly

100,000 miles

100 months

Replace fuel pump assembly
Inspect fuel tank for leaks
Perform full fuel system diagnostic

Fuel pump replacement recommended at this interval

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2017-2021 BMW X3?

The 2017-2021 BMW X3 is designed to run on 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 2017-2021 BMW X3?

The fuel tank capacity of the 2017-2021 BMW X3 is 17.7 gallons (67 liters). This capacity may vary slightly depending on the specific trim and model year.

Can I use ethanol-blended fuel in my BMW X3?

Yes, the 2017-2021 BMW X3 can use ethanol-blended fuels containing up to 10% ethanol (E10). However, fuels with higher ethanol content (e.g., E15 or E85) are not recommended as they may cause damage to the fuel system and engine components.

What is the fuel economy of the 2017-2021 BMW X3?

The fuel economy varies by engine type. For the 2.0L turbocharged inline-4 engine, the EPA-estimated fuel economy is 23 mpg city and 30 mpg highway. For the 3.0L turbocharged inline-6 engine, the EPA-estimated fuel economy is 20 mpg city and 27 mpg highway.

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

If you accidentally use fuel with an octane rating lower than 91 or a high ethanol blend, avoid driving the vehicle and contact a BMW-certified technician immediately. Running the engine with improper fuel can cause knocking, reduced performance, and potential engine 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 X3 Owner's Manual

Coming Soon

The official owner's manual for the 2017-2021 BMW X3, containing detailed fuel specifications, maintenance guidelines, and safety information.

BMW Fuel System Maintenance Guide

Coming Soon

A comprehensive guide on maintaining the fuel system of your BMW X3, including tips for optimal performance and longevity.

BMW Genuine Parts Catalog

Coming Soon

Access the official catalog of genuine BMW parts, including fuel system components, to ensure proper maintenance and warranty compliance.

BMW Service and Warranty Information

Coming Soon

Detailed information on BMW's service requirements and warranty implications related to fuel system maintenance and repairs.

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