Subaru Subaru WRX 2014-2021 Drivetrain Specifications
Explore the detailed drivetrain specifications for the 2014-2021 Subaru WRX, including transmission types, differential configurations, and AWD system. This guide is essential for maintenance, repairs, and performance upgrades.
Overview Specifications
This document provides detailed specifications and technical information about the drivetrain of the 2014-2021 Subaru WRX. It is designed to help enthusiasts, mechanics, and potential buyers understand the key features and performance aspects of the vehicle's drivetrain. Use the search and navigation instructions to quickly find specific details or explore the sections for a comprehensive understanding.
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Key Specifications
Transmission Type
6-speed manual / CVT
AWD System
Symmetrical AWD
Final Drive Ratio (Manual)
3.900
Final Drive Ratio (CVT)
4.111
Torque Split
50:50 (normal)
Available Specifications
Transmission
This section covers the transmission options available for the 2014-2021 Subaru WRX, including manual and automatic variants. It provides details on gear ratios, shift mechanisms, and performance characteristics.
Transmission
This section covers the transmission options available for the 2014-2021 Subaru WRX, including manual and automatic variants. It provides details on gear ratios, shift mechanisms, and performance characteristics.
Manual Transmission
- 6-speed manual transmission standard on all models
- Gear ratios: 1st (3.454), 2nd (1.947), 3rd (1.366), 4th (0.972), 5th (0.738), 6th (0.556)
- Final drive ratio: 3.900
- Short-throw shifter available as an option
- Dual-mass flywheel for smoother engagement
- Rev-matching feature for downshifts
Automatic Transmission (CVT)
- Continuously Variable Transmission (CVT) available as an option
- Simulated 8-speed manual mode with paddle shifters
- Adaptive shift logic for improved performance
- Final drive ratio: 4.111
- Sport Sharp mode for quicker throttle response
- Eco mode for improved fuel efficiency
All-Wheel Drive System
This section details the Symmetrical All-Wheel Drive (AWD) system used in the 2014-2021 Subaru WRX. It explains the system's design, functionality, and benefits for performance and safety.
All-Wheel Drive System
This section details the Symmetrical All-Wheel Drive (AWD) system used in the 2014-2021 Subaru WRX. It explains the system's design, functionality, and benefits for performance and safety.
Symmetrical AWD Design
- Standard on all WRX models
- Equal-length driveshafts for balanced power distribution
- 50:50 torque split under normal conditions
- Active Torque Vectoring for improved cornering
- Mechanical limited-slip differential (LSD) on manual models
- Electronic torque distribution on CVT models
Performance Benefits
- Enhanced traction in all weather conditions
- Improved stability during high-speed cornering
- Reduced understeer and oversteer
- Optimized power delivery to all four wheels
- Better acceleration on slippery surfaces
- Increased driver confidence in challenging driving scenarios
Drivetrain Components
This section provides an in-depth look at the key components of the Subaru WRX drivetrain, including the differentials, driveshafts, and axles. It highlights their roles in delivering power and performance.
Drivetrain Components
This section provides an in-depth look at the key components of the Subaru WRX drivetrain, including the differentials, driveshafts, and axles. It highlights their roles in delivering power and performance.
Differentials
- Front and rear open differentials on CVT models
- Front helical limited-slip differential (LSD) on manual models
- Rear mechanical LSD on manual models
- Center differential with viscous coupling
- Differential cooling system for high-performance driving
- Sealed units for durability and low maintenance
Driveshafts and Axles
- High-strength steel driveshafts
- Equal-length front axles for balanced power delivery
- Reinforced CV joints for durability
- Lightweight aluminum components for reduced weight
- Sealed bearings for long-term reliability
- Designed to handle high torque loads
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Component Specifications
Overview
- Type
- All-Wheel Drive (AWD)
- Configuration
- Symmetrical AWD
- Platform
- Subaru Global Platform
- Material
- High-strength steel
- Location
- Full vehicle undercarriage
Dimensions
- Propshaft Length
- 59.8 inches (1519 mm)
- Rear Differential Width
- 22.4 inches (569 mm)
- Transfer Case Height
- 12.6 inches (320 mm)
- Front Axle Diameter
- 1.57 inches (40 mm)
- Rear Axle Diameter
- 1.77 inches (45 mm)
- Driveshaft Tube Diameter
- 2.76 inches (70 mm)
- Cv Joint Diameter
- 3.94 inches (100 mm)
Materials
- Propshaft
- High-strength steel with carbon fiber reinforcement
- Differential Housing
- Aluminum alloy
- Axle Shafts
- Chrome-molybdenum steel
- Cv Joints
- Forged steel with PTFE lining
- Transfer Case
- Aluminum-magnesium alloy
Features
- Drivetrain Control
-
- Vehicle Dynamics Control (VDC)
- Active Torque Vectoring
- Electronic Brake-force Distribution
- Traction Control System (TCS)
- Differential Technology
-
- Mechanical Limited-Slip Front Differential
- Torsen® Limited-Slip Rear Differential
- Viscous Center Differential
- Electronic Brake LSD (simulated)
- Transfer Case
-
- Full-time AWD engagement
- 50:50 torque split capability
- Automatic torque distribution
- Compact lightweight design
- Axle Technology
-
- High-angle CV joints
- Sealed maintenance-free joints
- Reinforced axle shafts
- High-torque capacity
Safety Features
- Stability Control
-
- Vehicle Dynamics Control (VDC)
- Anti-lock Braking System (ABS)
- Electronic Brake-force Distribution (EBD)
- Traction Management
-
- Traction Control System (TCS)
- Hill Start Assist
- Active Torque Vectoring
- Mechanical Safety
-
- Reinforced driveline components
- Overload protection in differentials
- High-strength axle construction
Comfort Features
- Smoothness
-
- Vibration-damping propeller shaft
- Precision-balanced components
- Low-noise gear design
- Control
-
- Predictive AWD response
- Seamless torque transfer
- Adaptive power distribution
- Durability
-
- Corrosion-resistant materials
- Sealed maintenance-free joints
- Long-life lubrication system
Accessories
- Performance
-
- Short-throw shifter
- Performance differential bushings
- Upgraded driveshaft
- Reinforced axle kits
- Protection
-
- Skid plates
- Driveline guards
- Differential covers
- CV joint boots
- Maintenance
-
- Driveline service kits
- Differential fluid
- Axle grease
- CV joint rebuild kits
Maintenance
- Service interval
- 30,000 miles or 2 years
- Service Items
-
- Differential fluid replacement
- CV joint inspection
- Driveshaft balancing check
- Transfer case lubrication
- Axle boot inspection
- Torque verification
- Notes
- More frequent maintenance recommended for performance or off-road use
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Drivetrain components
- Powertrain
- Miles: 60,000Years: 5Coverage: Major drivetrain components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Driveline components
- Emissions
- Miles: 80,000Years: 8Coverage: Drivetrain-related emissions components
- Terms
- Warranty covers defects in materials and workmanship
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision CNC machining
- Heat treatment of driveline components
- Laser alignment of drivetrain
- Automated quality control testing
- Quality Control
- Vibration Testing: Dynamic balancingDurability Testing: High-torque enduranceEnvironmental Testing: Corrosion resistancePerformance Testing: Full drivetrain dyno evaluation
- Sustainability
-
- Recycled materials in components
- Closed-loop manufacturing
- Low-emission production processes
- Production Metrics
- Daily Output: 500 complete drivetrainsDefect Rate: <0.5%Production Time: 4.2 hours per drivetrain
Service Information for drivetrain Service
Maintenance and service requirements specific to the Subaru WRX drivetrain
- Inspect all drivetrain components
- Replace differential fluid
- Check CV joint boots for damage
- Verify drivetrain alignment
- Lubricate driveline components
- Check for abnormal noises or vibrations
Inspect more frequently for performance use
- Complete drivetrain inspection
- Replace transfer case fluid
- Check driveshaft balance
- Inspect axle shafts for wear
- Verify proper torque on all components
- Check for leaks in driveline
Consider drivetrain flush for severe conditions
- Complete drivetrain overhaul
- Replace all drivetrain fluids
- Inspect and replace worn CV joints
- Check differential backlash
- Verify transfer case operation
- Replace all drivetrain seals
Recommended to have dealership perform major service
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the drivetrain specifications for the 2014-2021 Subaru WRX?
What are the drivetrain specifications for the 2014-2021 Subaru WRX?
The 2014-2021 Subaru WRX features a symmetrical all-wheel-drive (AWD) system, standard across all models. It includes a 6-speed manual transmission or an optional continuously variable transmission (CVT) with manual mode. The AWD system distributes power 50:50 front-to-rear under normal conditions, with torque vectoring for improved handling. The drivetrain is compatible with Subaru's Boxer engine, ensuring optimal balance and performance.
Q2 What maintenance is required for the Subaru WRX drivetrain?
What maintenance is required for the Subaru WRX drivetrain?
Regular maintenance for the Subaru WRX drivetrain includes checking and replacing the transmission fluid every 30,000-60,000 miles, inspecting the differential fluid, and ensuring the AWD system is functioning properly. Additionally, the driveshaft and CV joints should be inspected for wear. Adhering to Subaru's recommended service intervals ensures longevity and optimal performance of the drivetrain components.
Q3 How do I replace the drivetrain components on a Subaru WRX?
How do I replace the drivetrain components on a Subaru WRX?
Replacing drivetrain components on a Subaru WRX involves lifting the vehicle securely, removing the undercarriage protection, and disconnecting the driveshaft, differential, and transmission. Use proper tools and follow the service manual for torque specifications. For AWD system components, ensure proper alignment and calibration after installation. Always consult a professional if unsure, as improper installation can lead to drivetrain damage.
Q4 What should I do if my Subaru WRX drivetrain is making noise?
What should I do if my Subaru WRX drivetrain is making noise?
If your Subaru WRX drivetrain is making noise, inspect for loose or worn components such as the driveshaft, CV joints, or differential. Check fluid levels and quality in the transmission and differential. Unusual noises may indicate bearing failure or misalignment. If the issue persists, consult a certified technician for a thorough diagnostic using specialized tools to pinpoint the problem.
Q5 How can I optimize the performance of my Subaru WRX drivetrain?
How can I optimize the performance of my Subaru WRX drivetrain?
To optimize the Subaru WRX drivetrain, use high-quality synthetic fluids for the transmission and differential. Upgrade to performance-oriented components like a short-throw shifter or aftermarket differentials for improved handling. Regularly inspect and maintain the AWD system to ensure proper torque distribution. Avoid aggressive driving on uneven surfaces to reduce wear on drivetrain components.
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 WRX Service Manual
Coming SoonComprehensive guide covering maintenance, repair, and troubleshooting for the 2014-2021 Subaru WRX drivetrain.
Technical Service Bulletin: AWD System Update
Coming SoonDetails updates and fixes for the AWD system in 2014-2021 Subaru WRX models, including software and hardware improvements.
Subaru WRX Parts Catalog
Coming SoonOfficial catalog listing OEM and aftermarket parts for the 2014-2021 Subaru WRX drivetrain, including compatibility information.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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