BMW 335i 2012-2018

BMW 335i 2012-2018 Fuel System Specifications

Detailed technical guide for the 2012-2018 BMW 335i fuel system, covering fuel type, pressure, injector specifications, and system maintenance. Ideal for technicians and DIY enthusiasts.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2012-2018 BMW 335I, including key features, measurements, and technical details

How to Use

Use the search function to find specific fuel specifications by entering keywords such as 'octane rating', 'fuel tank capacity', or 'fuel system components'.

Navigate through the fuel documentation sections by clicking on the section titles in the table of contents or using the next/previous buttons at the bottom of each page.

Key Specifications

Fuel Type

Premium Unleaded (91 AKI min)

Fuel Tank Capacity

15.8 gallons (60 liters)

Fuel Pump Pressure

5 bar (72.5 psi)

Combined Fuel Consumption

24 mpg (9.8 L/100 km)

Available Specifications

Fuel Requirements

Detailed information on the type of fuel required for optimal performance and compliance with BMW standards

Fuel Type and Octane Rating

Premium unleaded gasoline with a minimum octane rating of 91 AKI
Recommended octane rating of 93 AKI for maximum performance
Use of lower octane fuel may lead to reduced engine performance and efficiency
Avoid using gasoline with more than 10% ethanol (E10) to prevent engine damage

Fuel Additives

BMW recommends using fuel additives that meet BMW specification BMW LL-04
Do not use fuel additives containing metallic compounds
Regular use of approved fuel additives can help maintain fuel system cleanliness
Avoid additives that claim to increase octane rating beyond the specified limits

Note: Using unauthorized fuel additives may void the vehicle warranty.

Fuel System Components

Overview of the key components of the fuel system and their specifications

Fuel Tank

Fuel tank capacity: 15.8 gallons (60 liters)
Material: High-density polyethylene for durability and corrosion resistance
Includes a fuel level sensor for accurate fuel level measurement
Equipped with a venting system to prevent pressure build-up

Fuel Pump

Electric fuel pump with a flow rate of 120 liters per hour
Operating pressure: 5 bar (72.5 psi)
Integrated fuel filter for contaminant removal
Located inside the fuel tank for cooling and noise reduction

Note: Regular inspection of the fuel pump is recommended to ensure optimal performance.

Fuel Consumption and Efficiency

Technical details on fuel consumption rates and factors affecting fuel efficiency

Fuel Consumption Rates

City driving: 20 mpg (11.8 L/100 km)
Highway driving: 30 mpg (7.8 L/100 km)
Combined driving: 24 mpg (9.8 L/100 km)
Actual consumption may vary based on driving conditions and habits

Factors Affecting Fuel Efficiency

Regular maintenance of the fuel system is crucial for optimal efficiency
Proper tire inflation can improve fuel economy
Avoiding excessive idling and aggressive driving can reduce fuel consumption
Use of recommended fuel grade ensures maximum efficiency

Search Specifications

Search by specification name, value, or description

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)

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

Notes: Using fuel with less than 91 AKI may cause engine knocking and reduced efficiency

Fuel System

Fuel Delivery: Direct injection

Fuel Pump Type: Electric high-pressure fuel pump

Fuel Pump Pressure: 2000-2200 psi (138-152 bar)

Fuel Filter Part Number: 13-32-7-566-327

Notes: Fuel system is designed for high-pressure operation to optimize combustion efficiency

Fuel Tank

Capacity: 15.8 gallons (60 liters)

Material: High-density polyethylene (HDPE)

Fuel Level Sensor Part Number: 16-14-7-181-456

Notes: Tank includes an integrated fuel level sensor and venting system

Fuel injectors

Type: Solenoid-operated direct injectors

Flow Rate: 200-220 cc/min at 3 bar

Part Number: 13-62-7-585-123

Operating Pressure: 2000-2200 psi (138-152 bar)

Notes: Injectors are designed for precise fuel delivery and atomization

Fuel Pressure Regulator

Type: Integrated into high-pressure fuel pump

Operating Pressure: 2000-2200 psi (138-152 bar)

Part Number: 13-51-7-566-328

Notes: Regulator maintains consistent fuel pressure for optimal engine performance

Fuel Quality Requirements

Sulfur Content: Maximum 10 ppm

Detergent Additives: Required to prevent intake valve deposits

Notes: BMW recommends using Top Tier detergent gasoline for best results

Fuel Economy

City: 20 mpg

Highway: 30 mpg

Combined: 24 mpg

Notes: Fuel economy may vary based on driving conditions and fuel quality

Fuel System Maintenance

injector Cleaning Interval: Every 30,000 miles or 24 months

Fuel Filter Replacement interval: Every 60,000 miles or 48 months

Notes: Regular maintenance ensures optimal fuel system performance and longevity

Fuel System Diagnostics

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

Common Codes

P0171
P0174
P0087
P0191

Notes: Diagnostic codes may indicate issues with fuel pressure, injectors, or sensors

Safety information

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

Pressure Warning: Fuel system operates at high pressure; depressurize before servicing

Notes: Always follow BMW service procedures and safety guidelines

Service Information Service

Detailed service requirements and schedules for the fuel system

30,000

Inspect fuel injectors
Check fuel pressure
Clean fuel injectors if necessary

Use BMW-approved cleaning additives

60,000

Replace fuel filter
Inspect fuel lines and connections
Check fuel pump operation

Replace fuel filter with OEM part number 13-32-7-566-327

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2012-2018 BMW 335i?

The 2012-2018 BMW 335i 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 2012-2018 BMW 335i?

The fuel tank capacity of the 2012-2018 BMW 335i is 15.8 gallons (60 liters).

Can I use ethanol-blended fuel in my BMW 335i?

Yes, the 2012-2018 BMW 335i can use ethanol-blended fuel with up to 10% ethanol (E10). However, using fuel with higher ethanol content may void the warranty and damage the engine.

What is the fuel economy of the 2012-2018 BMW 335i?

The 2012-2018 BMW 335i has an EPA-estimated fuel economy of 20 mpg in the city and 30 mpg on the highway for the rear-wheel-drive model. The all-wheel-drive model has slightly lower fuel economy.

How often should I replace the fuel filter in my BMW 335i?

The fuel filter in the 2012-2018 BMW 335i is designed to last the lifetime of the vehicle under normal driving conditions. However, it should be inspected during routine maintenance and replaced if any issues are detected.

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 comprehensive guide on maintaining the fuel system of your BMW 335i, including fuel filter inspection and replacement procedures.

BMW Fuel Specifications and Recommendations

Coming Soon

Detailed information on the recommended fuel types, octane ratings, and ethanol content for the 2012-2018 BMW 335i.

BMW Fuel Economy Optimization Tips

Coming Soon

Tips and techniques to optimize the fuel economy of your BMW 335i, including driving habits and maintenance practices.

BMW Fuel System Troubleshooting

Coming Soon

A troubleshooting guide for common fuel system issues in the 2012-2018 BMW 335i, including symptoms and solutions.

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