BMW Z4 2018-present

BMW Z4 2018-present Fuel System Specifications

Detailed technical specifications and guidelines for the fuel system of the 2018-Present BMW Z4. Learn about fuel type requirements, fuel delivery system components, and emission compliance standards.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2018-Present BMW Z4, including key features, measurements, and technical details. This section provides detailed information on fuel types, fuel 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'.

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

Key Specifications

Fuel Tank Capacity

14.5 gallons (55 liters)

Recommended Octane Rating

91 AKI or higher

Fuel Injector Pressure

200 bar (2900 psi)

Combined Fuel Economy

26 MPG (9.0 L/100 km)

Fuel Filter Replacement Interval

Every 30,000 miles (48,000 km)

Available Specifications

Fuel Types and Requirements

This section outlines the recommended fuel types and octane ratings for the 2018-Present BMW Z4, ensuring optimal engine performance and efficiency.

Recommended Fuel Types

Premium unleaded gasoline with an octane rating of 91 AKI (Anti-Knock Index) or higher
Minimum octane rating of 89 AKI for acceptable performance
Use of ethanol blends up to E10 (10% ethanol) is approved
Avoid using diesel or any fuel with a higher ethanol content than E10

Fuel Additives

BMW recommends using fuel additives that meet BMW specification BMW 13 1 0
Avoid using additives containing metal compounds or silicone
Regular use of BMW-approved additives can help maintain fuel system cleanliness
Do not use additives that claim to increase octane rating beyond the recommended levels

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

Fuel System Components

This section provides detailed information on the fuel system components, including the fuel tank, fuel pump, and fuel injectors, along with their specifications and maintenance requirements.

Fuel Tank

Fuel tank capacity: 14.5 gallons (55 liters)
Material: High-density polyethylene (HDPE) with anti-corrosion coating
Includes a fuel level sensor with integrated fuel pump
Designed for a maximum pressure of 5 bar (72.5 psi)

Fuel Injectors

Direct injection system with piezo-electric injectors
Injector flow rate: 200 cc/min at 3 bar (43.5 psi)
Operating pressure: 200 bar (2900 psi)
Designed for precise fuel delivery and optimal combustion efficiency

Note: Regular inspection and cleaning of fuel injectors are recommended to maintain performance.

Fuel Consumption and Efficiency

This section covers the fuel consumption rates and efficiency metrics for the 2018-Present BMW Z4, including city, highway, and combined driving conditions.

Fuel Economy Ratings

City driving: 23 MPG (10.2 L/100 km)
Highway driving: 32 MPG (7.4 L/100 km)
Combined driving: 26 MPG (9.0 L/100 km)
Range: Approximately 377 miles (607 km) on a full tank

Efficiency Technologies

Eco Pro mode optimizes throttle response and gear shifts for improved fuel efficiency
Auto Start-Stop function reduces fuel consumption during idle periods
Lightweight construction materials contribute to overall fuel efficiency
Aerodynamic design reduces drag and improves fuel economy

Fuel System Maintenance

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

Inspection and Maintenance Schedule

Inspect fuel lines and connections every 10,000 miles (16,000 km)
Replace fuel filter every 30,000 miles (48,000 km)
Check fuel injectors for clogging every 20,000 miles (32,000 km)
Perform a fuel system cleaning every 50,000 miles (80,000 km)

Common Issues and Troubleshooting

Symptoms of a failing fuel pump: Engine hesitation, loss of power, or failure to start
Clogged fuel injectors may cause rough idling or poor acceleration
Fuel leaks can be identified by a strong gasoline odor or visible stains under the vehicle
Use a diagnostic tool to check for fuel system error codes

Note: If any issues are detected, consult a certified BMW technician for further diagnosis and repair.

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)

Notes: Using fuel with lower octane rating may reduce performance and fuel efficiency

Fuel Tank

Capacity: 14.5 gallons (55 liters)

Material: High-density polyethylene (HDPE)

Part Number: 16117359901

Pressure Sensor: Part Number: 16147159523
Operating Pressure: 3.5 - 4.5 psi (24 - 31 kPa)

Fuel Pump

Type: Electric in-tank fuel pump

Flow Rate: 150 liters per hour (LPH)

Operating Pressure: 58 psi (400 kPa)

Part Number: 16148658765

Voltage: 12V DC

Current Draw: 5.5 - 7.5 amps

Fuel injectors

Type: Direct injection (DI)

Flow Rate: 200 cc/min at 3 bar

Part Number: 13537585221

Spray Pattern: Multi-hole

Operating Pressure: 2000 - 2900 psi (138 - 200 bar)

Fuel Filter

Type: In-line fuel filter

Part Number: 13327720001

Replacement interval: Every 30,000 miles (48,000 km)

Filtration Level: 10 microns

Pressure Drop: 1.5 psi (10 kPa) maximum

Fuel Pressure Regulator

Type: Mechanical diaphragm

Part Number: 13537585222

Operating Pressure: 58 psi (400 kPa)

Tolerance: ±2 psi (±14 kPa)

Location: Integrated into fuel rail

Fuel Rail

Material: Aluminum

Part Number: 13537585223

Pressure Rating: 3000 psi (207 bar)

injector Connection Type: Quick-connect

Fuel System Diagnostics

Obd2 Codes

P0171 - System too lean
P0172 - System too rich
P0190 - Fuel rail pressure sensor circuit malfunction
P0191 - Fuel rail pressure sensor range/performance
P0192 - Fuel rail pressure sensor circuit low input

Diagnostic Tool: BMW ISTA or compatible OBD2 scanner

Pressure Test interval: Every 60,000 miles (96,000 km)

Leak Test interval: Every 60,000 miles (96,000 km)

Fuel System Maintenance

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

Fuel System Flush interval: Every 60,000 miles (96,000 km)

Recommended Additives

BMW Fuel System Cleaner (part number: 82141467704)
Techron Concentrate Plus

Notes: Avoid using aftermarket additives not approved by BMW

Fuel System Safety

Fire Hazard Warning: Fuel system operates under high pressure. Depressurize before servicing.

Safety Equipment

Fire extinguisher (Class B)
Safety goggles
Gloves

Depressurization Procedure: Disconnect fuel pump fuse and run engine until it stalls

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000 miles

24 months

Replace fuel filter
Clean fuel injectors
Inspect fuel lines and connections

Use only BMW-approved cleaning agents

60,000 miles

48 months

Perform fuel system pressure test
Perform fuel system leak test
Flush fuel system

Check for any diagnostic trouble codes (DTCs) before servicing

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2018-Present BMW Z4?

The 2018-Present BMW Z4 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 BMW Z4?

The BMW Z4 has a fuel tank capacity of 14.5 gallons (55 liters). This allows for a balance between range and weight efficiency.

Can I use ethanol-blended fuel in the BMW Z4?

The BMW Z4 can use ethanol-blended fuels with 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 Z4?

The fuel economy varies by engine and drivetrain configuration. For example, the sDrive30i model achieves approximately 25 MPG city and 32 MPG highway, while the M40i model achieves around 23 MPG city and 31 MPG highway.

Does the BMW Z4 require any fuel additives?

BMW does not recommend the use of fuel additives for the Z4. The vehicle's engine and fuel system are designed to operate efficiently with standard premium unleaded gasoline. Using additives may void the warranty or cause 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 Z4 Owner's Manual

Coming Soon

The official owner's manual provides detailed information on fuel specifications, maintenance schedules, and operational guidelines for the BMW Z4.

BMW Fuel System Maintenance Guide

Coming Soon

A comprehensive guide on maintaining the fuel system, including tips on fuel quality, filter replacement, and troubleshooting common issues.

BMW Genuine Parts Catalog

Coming Soon

Access the official catalog for genuine BMW fuel system components, ensuring compatibility and warranty compliance.

BMW Service and Warranty Information

Coming Soon

Detailed information on BMW's service requirements and warranty coverage, including fuel-related maintenance and repairs.

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