Subaru Subaru WRX 2014-2021 Fuel System Specifications
Explore the detailed fuel specifications for the 2014-2021 Subaru WRX, including fuel type, octane rating, fuel system, and fuel economy. This guide is essential for maintenance, performance, and troubleshooting.
Fuel Specifications Overview Specifications
This document provides detailed fuel specifications for the 2014-2021 Subaru WRX. It covers essential information such as fuel type, octane rating, fuel economy, and maintenance tips. Designed for owners and enthusiasts, this guide helps you understand the fuel requirements and optimize your vehicle's performance. Use the search and navigation instructions to quickly find the information you need.
How to Use
Use the search function to find specific terms like 'octane rating' or 'fuel economy'. Enter keywords directly into the search bar for quick access to relevant sections.
Navigate through the document using the section titles and subsections. Click on any section to expand it and view detailed information. Use the quick reference table for key specifications.
Key Specifications
Fuel Type
Premium Unleaded
Octane Rating
91 AKI (Min)
City MPG
18-21 MPG
Highway MPG
24-27 MPG
Fuel Tank Capacity
15.9 Gallons
Available Specifications
Fuel Type and Octane Rating
This section details the recommended fuel type and octane rating for the 2014-2021 Subaru WRX. Understanding these specifications is crucial for maintaining engine performance and longevity.
Fuel Type and Octane Rating
This section details the recommended fuel type and octane rating for the 2014-2021 Subaru WRX. Understanding these specifications is crucial for maintaining engine performance and longevity.
Recommended Fuel Type
- Premium unleaded gasoline is required
- Do not use diesel or E85 ethanol blends
- Using lower octane fuel can cause engine knocking
- Follow manufacturer guidelines for optimal performance
Octane Rating
- Minimum octane rating of 91 (AKI)
- Higher octane fuels (93 AKI) recommended for performance
- Lower octane can reduce power and efficiency
- Always check the fuel pump label for octane rating
Fuel Economy
This section provides information on the fuel economy of the 2014-2021 Subaru WRX. Learn about the vehicle's fuel efficiency in both city and highway driving conditions.
Fuel Economy
This section provides information on the fuel economy of the 2014-2021 Subaru WRX. Learn about the vehicle's fuel efficiency in both city and highway driving conditions.
City Driving
- Average fuel economy: 18-21 MPG
- Heavy traffic can reduce efficiency
- Smooth acceleration improves MPG
- Avoid idling to save fuel
Highway Driving
- Average fuel economy: 24-27 MPG
- Cruising at 65 MPH optimizes efficiency
- Using cruise control can help maintain MPG
- Higher speeds significantly reduce fuel economy
Fuel System Maintenance
This section covers essential maintenance tips for the fuel system of the 2014-2021 Subaru WRX. Proper maintenance ensures optimal fuel delivery and engine performance.
Fuel System Maintenance
This section covers essential maintenance tips for the fuel system of the 2014-2021 Subaru WRX. Proper maintenance ensures optimal fuel delivery and engine performance.
Fuel Filter
- Replace fuel filter every 30,000 miles
- Clogged filters reduce fuel flow
- Signs of a dirty filter include poor acceleration
- Use OEM or high-quality replacement parts
Fuel Injectors
- Clean fuel injectors every 15,000 miles
- Dirty injectors can cause misfires
- Use fuel injector cleaner as recommended
- Professional cleaning may be necessary
Fuel Tank
- Inspect fuel tank for leaks annually
- Keep fuel level above 1/4 tank to avoid debris
- Avoid overfilling the tank
- Replace damaged fuel caps immediately
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Component Specifications
Overview
- Type
- Premium unleaded gasoline
- Octane Rating
- 91 or higher
- Tank Capacity
- 15.9 gallons (60.2 liters)
- Fuel Delivery
- Direct injection
- Emissions Compliance
- Tier 3 Bin 125
- Fuel Economy
- 21 city / 28 highway mpg (11.2 / 8.4 L/100km)
Dimensions
- Tank Length
- 36.2 inches (92 cm)
- Tank Width
- 24.8 inches (63 cm)
- Tank Height
- 12.6 inches (32 cm)
- Filler Neck Diameter
- 1.5 inches (3.8 cm)
- Fuel Line Diameter
- 0.5 inches (1.27 cm)
- Fuel Pump Pressure
- 58 psi (400 kPa)
- Fuel Filter Size
- 3.5 x 2.8 inches (8.9 x 7.1 cm)
Materials
- Fuel Tank
- High-density polyethylene
- Fuel Lines
- Nylon with rubber coating
- Fuel Pump
- Stainless steel and plastic composite
- Fuel injectors
- Stainless steel with teflon seals
- Filler Neck
- Galvanized steel
Features
- Fuel Delivery
-
- Symmetrical All-Wheel Drive optimization
- High-pressure direct injection
- Turbocharger intercooler system
- Variable valve timing
- Efficiency
-
- Active grille shutters
- Eco-driving indicator
- Lightweight fuel system components
- Optimized combustion chamber design
- Monitoring
-
- Real-time fuel economy display
- Low fuel warning system
- Fuel level sensor with temperature compensation
- Diagnostic trouble code storage
- Safety
-
- Rollover valve in fuel tank
- Impact-activated fuel pump cutoff
- Leak detection system
- Reinforced fuel tank shield
- Environmental
-
- Evaporative emissions control
- Sealed fuel system
- Low sulfur fuel compatibility
- Recyclable fuel system components
Safety Features
- Crash Protection
-
- Automatic fuel pump shutoff
- Reinforced fuel tank structure
- Impact-resistant fuel lines
- Fire Prevention
-
- Flame arrestor in filler neck
- Thermal protection for fuel lines
- Fuel tank pressure relief valve
- Environmental Protection
-
- Double-walled fuel tank
- Vapor recovery system
- Leak detection sensors
Comfort Features
- Refueling
-
- Easy-access fuel door
- Capless fuel filler
- Automatic fuel door release
- Driving
-
- Smooth power delivery
- Minimal turbo lag
- Consistent fuel pressure
- Maintenance
-
- Easy-access fuel filter
- Serviceable fuel pump
- Durable fuel system components
Accessories
- Performance
-
- Aftermarket fuel pumps
- High-flow fuel injectors
- Fuel pressure regulators
- Protection
-
- Fuel tank skid plates
- Fuel line protectors
- Fuel filler neck guards
- Monitoring
-
- Fuel pressure gauges
- Air-fuel ratio meters
- Fuel flow sensors
Maintenance
- Service interval
- Every 6,000 miles or 6 months
- Service Items
-
- Fuel filter inspection
- Fuel system pressure test
- Fuel injector cleaning
- Fuel tank inspection
- Evaporative system check
- Maintenance Notes
- Use only recommended fuel additives, avoid ethanol blends above 10%
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Fuel system components
- Powertrain
- Miles: 60,000Years: 5Coverage: Fuel pump and injectors
- Emissions
- Miles: 80,000Years: 8Coverage: Evaporative emissions system
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Fuel tank and lines
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Robotic fuel tank molding
- Automated fuel line assembly
- Precision fuel injector calibration
- Quality Control
- Pressure Testing: 100% fuel system pressure testingLeak Detection: Helium leak detection for all componentsDurability Testing: Simulated 150,000 mile fuel system testing
- Sustainability Practices
-
- Recycled materials in fuel system components
- Low-emission manufacturing processes
- Energy-efficient production facilities
- Production Metrics
- Annual Production: 50,000 unitsDefect Rate: 0.01%Recycling Rate: 95% of fuel system materials
Service Information for fuel Service
Maintenance and service requirements specific to the fuel system
- Inspect fuel lines and connections
- Check fuel tank for damage or leaks
- Test fuel system pressure
- Inspect fuel filler neck and cap
- Check evaporative emissions system
Use only Subaru-approved fuel system cleaners
- Replace fuel filter
- Clean fuel injectors
- Inspect fuel pump operation
- Check fuel pressure regulator
- Test fuel system for leaks
Requires special tools for fuel system service
- Replace fuel pump assembly
- Inspect and clean fuel tank
- Replace fuel pressure sensor
- Perform complete fuel system diagnostic
- Check turbocharger fuel delivery
Major service requiring dealership-level equipment
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is recommended for the 2014-2021 Subaru WRX?
What type of fuel is recommended for the 2014-2021 Subaru WRX?
The 2014-2021 Subaru WRX requires premium unleaded gasoline with an octane rating of 91 or higher. Using lower-octane fuel can lead to engine knocking, reduced performance, and potential long-term damage. The vehicle's turbocharged engine is optimized for high-octane fuel to ensure maximum power output and efficiency. Always refer to the owner's manual for specific fuel recommendations.
Q2 What is the recommended maintenance schedule for the 2014-2021 Subaru WRX?
What is the recommended maintenance schedule for the 2014-2021 Subaru WRX?
The 2014-2021 Subaru WRX requires regular maintenance every 6,000 miles or 6 months, whichever comes first. Key tasks include oil and filter changes, tire rotations, and brake inspections. At 30,000 miles, additional services like air filter replacement and coolant checks are recommended. Always follow the detailed maintenance schedule in the owner's manual to ensure optimal performance and longevity.
Q3 How do I replace the fuel filter on a 2014-2021 Subaru WRX?
How do I replace the fuel filter on a 2014-2021 Subaru WRX?
To replace the fuel filter on a 2014-2021 Subaru WRX, first, locate the fuel filter near the fuel tank. Disconnect the negative battery terminal for safety. Relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Disconnect the fuel lines and remove the old filter. Install the new filter, reconnect the fuel lines, and secure the battery terminal. Start the engine to check for leaks.
Q4 What should I do if my 2014-2021 Subaru WRX experiences fuel system issues?
What should I do if my 2014-2021 Subaru WRX experiences fuel system issues?
If your 2014-2021 Subaru WRX has fuel system issues, start by checking for error codes using an OBD-II scanner. Common problems include clogged fuel filters, faulty fuel pumps, or dirty injectors. Inspect the fuel lines for leaks or damage. If the issue persists, consult a professional mechanic or refer to the service manual for detailed troubleshooting steps.
Q5 How can I optimize fuel efficiency in my 2014-2021 Subaru WRX?
How can I optimize fuel efficiency in my 2014-2021 Subaru WRX?
To optimize fuel efficiency in your 2014-2021 Subaru WRX, maintain proper tire pressure, use high-quality premium fuel, and avoid aggressive driving. Regularly replace air filters and spark plugs, and ensure the engine is properly tuned. Reducing excess weight and using cruise control on highways can also improve mileage. Follow the manufacturer's maintenance schedule for best results.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2014-2021 Subaru WRX Service Manual
Coming SoonComprehensive guide covering maintenance, repairs, and technical specifications for the 2014-2021 Subaru WRX.
Technical Service Bulletin: Fuel System Updates
Coming SoonDetails recent updates and fixes for the fuel system in 2014-2021 Subaru WRX models.
Subaru WRX Parts and Accessories Catalog
Coming SoonOfficial catalog listing OEM parts and accessories for the 2014-2021 Subaru WRX.
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