Subaru Subaru Ascent 2019-present Fuel System Specifications
Explore detailed fuel specifications for the 2019-Present Subaru Ascent, including fuel type, tank capacity, economy, and emissions standards. Essential for maintenance, efficiency, and compliance.
Overview Specifications
This document provides detailed fuel specifications and related information for the 2019-Present Subaru Ascent. It is designed to help users understand the vehicle's fuel requirements, efficiency, and performance. Use the search functionality to quickly locate specific details or navigate through the sections for a comprehensive understanding of the fuel system and its components.
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Key Specifications
Fuel Type
Premium Unleaded (91+ Octane)
Fuel Tank Capacity
19.3 gallons
City MPG
20-21 MPG
Highway MPG
26-27 MPG
Combined MPG
22-23 MPG
Available Specifications
Fuel Type and Requirements
This section covers the type of fuel recommended for the Subaru Ascent, including octane ratings and any specific requirements for optimal performance and efficiency.
Fuel Type and Requirements
This section covers the type of fuel recommended for the Subaru Ascent, including octane ratings and any specific requirements for optimal performance and efficiency.
Recommended Fuel Type
- Premium unleaded gasoline with an octane rating of 91 or higher is recommended for optimal performance.
- Regular unleaded gasoline with an octane rating of 87 can be used but may result in reduced performance.
- Ethanol blends up to E15 (15% ethanol) are acceptable.
- Avoid using diesel or any fuel with more than 15% ethanol, as it may damage the engine.
Fuel Additives
- Subaru recommends using Top Tier detergent gasoline to maintain engine cleanliness.
- Avoid using fuel additives that are not approved by Subaru.
- Using non-recommended additives may void the warranty.
- Regular use of approved additives can improve fuel efficiency and reduce emissions.
Fuel Efficiency and Mileage
This section provides details on the Subaru Ascent's fuel efficiency, including EPA-estimated mileage figures and factors that can affect fuel economy.
Fuel Efficiency and Mileage
This section provides details on the Subaru Ascent's fuel efficiency, including EPA-estimated mileage figures and factors that can affect fuel economy.
EPA-Estimated Mileage
- City: 20-21 MPG
- Highway: 26-27 MPG
- Combined: 22-23 MPG
- Actual mileage may vary based on driving conditions and habits.
Factors Affecting Fuel Economy
- Driving at high speeds or aggressive acceleration reduces fuel efficiency.
- Frequent idling or stop-and-go traffic can lower mileage.
- Proper tire inflation and regular maintenance improve fuel economy.
- Using roof racks or carrying heavy loads can decrease efficiency.
Fuel System and Components
This section explains the key components of the Subaru Ascent's fuel system, including the fuel tank, fuel pump, and injectors, and how they contribute to overall performance.
Fuel System and Components
This section explains the key components of the Subaru Ascent's fuel system, including the fuel tank, fuel pump, and injectors, and how they contribute to overall performance.
Fuel Tank Capacity
- The fuel tank has a capacity of 19.3 gallons.
- A larger tank allows for longer driving ranges between refuels.
- The tank is made of durable materials to prevent leaks and corrosion.
- A low fuel warning light alerts the driver when fuel is running low.
Fuel Injection System
- The Ascent uses a direct fuel injection system for precise fuel delivery.
- This system improves combustion efficiency and reduces emissions.
- Regular cleaning of fuel injectors is recommended for optimal performance.
- The system is designed to work seamlessly with the turbocharged engine.
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Component Specifications
Overview
- Type
- Gasoline
- Configuration
- Direct Injection
- Platform
- Subaru Global Platform
- Material
- Fuel Tank: High-Density Polyethylene
- Location
- Underbody, Rear
Dimensions
- Fuel Tank Capacity
- 19.3 gallons (73 liters)
- Fuel Line Diameter
- 0.375 inches (9.5 mm)
- Fuel Pump Pressure
- 58 psi (400 kPa)
- Fuel Filter Size
- 3.5 x 2.5 inches (89 x 64 mm)
- Fuel Rail Length
- 23.6 inches (600 mm)
- Fuel injector Flow Rate
- 270 cc/min
- Fuel Tank Weight
- 22 lbs (10 kg)
Materials
- Fuel Tank
- High-Density Polyethylene
- Fuel Lines
- Nylon with Ethanol-Resistant Coating
- Fuel Pump
- Stainless Steel Housing
- Fuel injectors
- Aluminum Alloy
- Fuel Filter
- Cellulose Media with Resin Binder
Features
- Efficiency
-
- Direct Injection Technology
- Optimized Combustion Chambers
- Variable Valve Timing
- Eco Mode
- Performance
-
- High-Pressure Fuel Pump
- Multi-Hole Fuel Injectors
- Turbocharged Engine Option
- Safety
-
- Fuel Tank Impact Sensor
- Automatic Fuel Shut-Off
- Leak Detection System
- Environmental
-
- Low Evaporative Emissions
- Ethanol-Compatible Fuel System
- Recyclable Fuel Components
- Technology
-
- Electronic Throttle Control
- Onboard Diagnostics (OBD-II)
- Fuel Level Sensor with Digital Display
Safety Features
- Crash Protection
-
- Fuel Tank Rollover Valve
- Impact-Absorbing Fuel Lines
- Reinforced Fuel Tank Shield
- Fire Prevention
-
- Fuel Pump Inertia Switch
- Flame Arrestor in Fuel Tank
- Heat-Resistant Fuel Components
- Leak Prevention
-
- Double-Walled Fuel Lines
- Sealed Fuel System
- Pressure-Tested Components
Comfort Features
- Noise Reduction
-
- Insulated Fuel Pump
- Vibration-Dampening Mounts
- Quiet Fuel Injectors
- Convenience
-
- Easy-Access Fuel Filler
- Fuel Cap with Tether
- Fuel Gauge with Range Indicator
- Maintenance
-
- Self-Sealing Fuel Lines
- Replaceable Fuel Filter
- Serviceable Fuel Pump
Accessories
- Fuel Additives
-
- Fuel System Cleaner
- Octane Booster
- Ethanol Treatment
- Fuel Containers
-
- Portable Fuel Can
- Fuel Storage Tank
- Emergency Fuel Pack
- Fuel Tools
-
- Fuel Pressure Tester
- Fuel Line Disconnect Tool
- Fuel Injector Cleaner Kit
Maintenance
- Service interval
- Every 6,000 miles or 6 months
- Service Items
-
- Inspect Fuel Lines for Leaks
- Check Fuel Filter Condition
- Test Fuel Pump Pressure
- Clean Fuel Injectors
- Replace Fuel Cap if Damaged
- Maintenance Notes
- Use only recommended fuel types and additives. Avoid low-quality fuel to prevent system damage.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Fuel System Components
- Powertrain Warranty
- Miles: 60,000Years: 5Coverage: Fuel Pump and Injectors
- Emissions Warranty
- Miles: 80,000Years: 8Coverage: Fuel System Emission Controls
- Corrosion Warranty
- Miles: UnlimitedYears: 5Coverage: Fuel Tank
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Injection Molding for Fuel Tank
- CNC Machining for Fuel Injectors
- Robotic Assembly for Fuel Lines
- Quality Control
- Pressure Testing: Every Fuel System ComponentLeak Testing: Entire Fuel SystemDurability Testing: Fuel Pump and Injectors
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Manufacturing
- Low-Emission Production
- Production Metrics
- Annual Production: 500,000 Fuel SystemsDefect Rate: Less than 0.1%Energy Consumption: 15 kWh per Fuel System
Service Information for Fuel Service
Maintenance and service requirements specific to the fuel system
- Inspect Fuel Lines for Leaks
- Check Fuel Filter Condition
- Test Fuel Pump Pressure
- Clean Fuel Injectors
- Replace Fuel Cap if Damaged
Use only recommended fuel types and additives.
- Replace Fuel Filter
- Inspect Fuel Tank for Damage
- Check Fuel Pressure Regulator
- Clean Fuel Rail
Ensure all connections are secure after service.
- Replace Fuel Pump
- Inspect and Clean Fuel Injectors
- Check Fuel Tank Ventilation System
- Test Fuel System Pressure
Major service may require special tools and diagnostics.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of fuel is recommended for the 2019-Present Subaru Ascent?
What type of fuel is recommended for the 2019-Present Subaru Ascent?
The 2019-Present Subaru Ascent is designed to run on regular unleaded gasoline with an octane rating of 87 or higher. Using premium fuel is not required but may provide slight performance improvements in certain conditions. It is important to avoid using fuels with more than 15% ethanol (E15) or any diesel fuel, as these can cause engine damage and void the warranty.
Q2 What is the recommended maintenance schedule for the Subaru Ascent?
What is the recommended maintenance schedule for the Subaru Ascent?
The Subaru Ascent requires routine maintenance every 6,000 miles or 6 months, whichever comes first. Key tasks include oil and filter changes, tire rotation, and inspections of brakes, fluids, and belts. At 30,000 miles, replace the engine air filter and cabin air filter. At 60,000 miles, additional services like spark plug replacement and coolant flush are recommended. Always refer to the owner’s manual for specific intervals and requirements.
Q3 How do I replace the fuel filter on a Subaru Ascent?
How do I replace the fuel filter on a Subaru Ascent?
Replacing the fuel filter on a Subaru Ascent involves locating the filter (typically near the fuel tank), relieving fuel system pressure, disconnecting the fuel lines, and removing the old filter. Install the new filter by reversing the steps, ensuring all connections are secure. Use proper safety precautions, such as wearing gloves and eye protection, and consult the service manual for detailed instructions.
Q4 What should I do if my Subaru Ascent has poor fuel efficiency?
What should I do if my Subaru Ascent has poor fuel efficiency?
If your Subaru Ascent is experiencing poor fuel efficiency, check for issues like underinflated tires, clogged air filters, or malfunctioning oxygen sensors. Ensure you are using the correct fuel type and avoid excessive idling or aggressive driving. If the problem persists, have the vehicle inspected by a certified technician to diagnose potential issues with the fuel system, engine, or emissions control systems.
Q5 How can I optimize the fuel performance of my Subaru Ascent?
How can I optimize the fuel performance of my Subaru Ascent?
To optimize fuel performance, maintain proper tire pressure, use the recommended fuel type, and keep up with regular maintenance such as oil changes and air filter replacements. Drive smoothly, avoiding rapid acceleration and hard braking. Reduce unnecessary weight in the vehicle and minimize the use of accessories like roof racks when not needed. These practices can help improve fuel efficiency and overall performance.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Subaru Ascent Owner’s Manual
Coming SoonComprehensive guide covering operation, maintenance, and troubleshooting for the Subaru Ascent.
Technical Service Bulletin: Fuel System Updates
Coming SoonLatest updates and fixes for the fuel system in the Subaru Ascent.
Subaru Ascent Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM parts and accessories for the Subaru Ascent.
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Technical Information
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