Subaru Subaru Impreza 2007-2011 Drivetrain Specifications
Explore the detailed drivetrain specifications for the 2007-2011 Subaru Impreza, including transmission types, AWD system, and differential configurations. Ideal for mechanics, enthusiasts, and owners seeking performance and maintenance insights.
Overview Specifications
This document provides detailed specifications and technical information about the drivetrain of the 2007-2011 Subaru Impreza. It is designed to assist enthusiasts, mechanics, and owners in understanding the vehicle's drivetrain components, performance, and maintenance. Use the search functionality to locate specific terms or navigate through sections to explore detailed information about transmission, differentials, and other drivetrain-related systems.
How to Use
Use the search bar to enter keywords related to the drivetrain, such as 'transmission type' or 'AWD system'. Results will highlight relevant sections and subsections for quick access.
Scroll through the sections to explore major topics like transmission, differentials, and drivetrain layout. Click on subsections to view detailed technical points and specifications.
Key Specifications
Transmission Type
5-speed manual / 4-speed automatic
AWD System
Symmetrical Full-Time AWD
Center Differential
Viscous Coupling
Rear Differential
Torsen LSD (STI)
Drivetrain Layout
Longitudinal Engine, AWD
Available Specifications
Transmission
This section covers the transmission options available for the 2007-2011 Subaru Impreza, including manual and automatic variants. It also details gear ratios, shift mechanisms, and performance characteristics.
Transmission
This section covers the transmission options available for the 2007-2011 Subaru Impreza, including manual and automatic variants. It also details gear ratios, shift mechanisms, and performance characteristics.
Manual Transmission
- 5-speed manual transmission standard on most trims
- Gear ratios optimized for balanced performance and fuel efficiency
- Short-throw shifter available on WRX and STI models
- Dual-mass flywheel for smoother engagement
- Optional limited-slip differential on performance models
Automatic Transmission
- 4-speed automatic available on base models
- Sportshift mode for manual-like control
- Adaptive shift logic for improved responsiveness
- Torque converter designed for smooth power delivery
- Optional paddle shifters on higher trims
All-Wheel Drive System
This section explains the Subaru Symmetrical All-Wheel Drive (AWD) system, a hallmark of the Impreza. It covers the system's layout, functionality, and advantages in various driving conditions.
All-Wheel Drive System
This section explains the Subaru Symmetrical All-Wheel Drive (AWD) system, a hallmark of the Impreza. It covers the system's layout, functionality, and advantages in various driving conditions.
Symmetrical AWD Layout
- Equal-length driveshafts for balanced power distribution
- Full-time AWD system standard on all models
- Center differential with viscous coupling
- Improved traction on slippery surfaces
- Enhanced stability during cornering
Performance Enhancements
- Driver Controlled Center Differential (DCCD) on STI models
- Multi-mode AWD settings for varying conditions
- Torque vectoring for improved handling
- Lightweight components for reduced drivetrain loss
- Optimized for rally-inspired performance
Differentials
This section provides details about the differentials used in the 2007-2011 Subaru Impreza, including their types, functions, and performance benefits.
Differentials
This section provides details about the differentials used in the 2007-2011 Subaru Impreza, including their types, functions, and performance benefits.
Front and Rear Differentials
- Open differential on base models
- Limited-slip differential on WRX and STI trims
- Helical front differential for improved torque distribution
- Torsen rear differential on STI models
- Durable construction for high-stress conditions
Center Differential
- Viscous coupling for smooth power transfer
- Adjustable torque split on performance models
- Enhanced off-road capability
- Sealed design for long-term reliability
- Integrated with AWD system for optimal performance
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Component Specifications
Overview
- Type
- All-Wheel Drive (AWD)
- Configuration
- Symmetrical AWD
- Platform
- Subaru Global Platform
- Material
- High-strength steel and aluminum
- Location
- Front-engine, longitudinal
Dimensions
- Driveshaft Length
- 60.2 inches (1529 mm)
- Transmission Length
- 28.7 inches (729 mm)
- Differential Width
- 22.4 inches (569 mm)
- Axle Diameter
- 1.5 inches (38 mm)
- Transfer Case Height
- 10.8 inches (274 mm)
- Propeller Shaft Diameter
- 2.36 inches (60 mm)
- Ground Clearance
- 5.9 inches (150 mm)
Materials
- Transmission Housing
- Aluminum alloy
- Driveshaft
- High-strength steel
- Differential Gears
- Case-hardened steel
- Axles
- Forged steel
- Transfer Case
- Aluminum alloy
Features
- Drivetrain Control
-
- Vehicle Dynamics Control (VDC)
- Traction Control System (TCS)
- Active Torque Split AWD
- Hill Start Assist
- Transmission
-
- 5-speed manual
- 4-speed automatic (optional)
- Dual-range gearbox (optional)
- Smooth shift mechanism
- Differential
-
- Limited-slip rear differential
- Open front differential
- Viscous coupling center differential
- Sealed for life
- Axles
-
- Independent front suspension
- Multi-link rear suspension
- Constant velocity (CV) joints
- Sealed axle boots
- Cooling
-
- Transmission oil cooler
- Differential cooling fins
- Heat-resistant materials
- Ventilated housing
Safety Features
- Stability
-
- Electronic Stability Program (ESP)
- Anti-lock Braking System (ABS)
- Roll-over mitigation
- Structural
-
- Reinforced drivetrain mounts
- Crash-resistant transmission tunnel
- Impact-absorbing differential housing
Comfort Features
- Noise Reduction
-
- Sound-deadening materials
- Vibration-dampening mounts
- Smooth gear engagement
- Handling
-
- Predictable AWD performance
- Responsive steering feedback
- Balanced weight distribution
- Climate
-
- Heat-shielded components
- Thermal management system
- Cold-weather performance
Accessories
- Performance
-
- Short-throw shifter
- Upgraded differential bushings
- High-performance transmission fluid
- Protection
-
- Skid plates
- Differential guard
- Driveshaft loop
- Maintenance
-
- Fluid change kit
- Axle boot repair kit
- Transmission service tools
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Transmission fluid change
- Differential oil replacement
- Driveshaft inspection
- Axle boot check
- Transfer case lubrication
- Maintenance Notes
- Use only Subaru-approved fluids for optimal performance.
Warranty
- Basic
- Miles: 36,000Years: 3Coverage: Bumper-to-bumper
- Powertrain
- Miles: 60,000Years: 5Coverage: Drivetrain components
- Corrosion
- Miles: UnlimitedYears: 5Coverage: Perforation only
- Emissions
- Miles: 80,000Years: 8Coverage: Federal emissions components
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Precision machining
- Robotic assembly
- Laser alignment
- Quality Control
- Testing: Durability testing, Thermal cycling, Vibration analysisStandards: ISO 9001, JIS D 0201, SAE J2928
- Sustainability Practices
-
- Recycled materials
- Energy-efficient production
- Waste reduction programs
- Production Metrics
- Units Per Day: 1200Defect Rate: 0.02%Energy Usage: 15 kWh per unit
Service Information for drivetrain Service
Maintenance and service requirements specific to this component
- Inspect driveshaft for wear
- Check transmission fluid level
- Inspect differential seals
- Lubricate transfer case
- Check axle boots for damage
Use only Subaru-approved fluids and lubricants.
- Replace transmission fluid
- Replace differential oil
- Inspect CV joints
- Check drivetrain mounts
- Test AWD system operation
Special tools required for differential service.
- Replace transfer case fluid
- Inspect and replace worn axle boots
- Check propeller shaft alignment
- Perform drivetrain vibration analysis
- Replace differential bushings if necessary
Major service may require dealership equipment.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What drivetrain components are compatible with the 2007-2011 Subaru Impreza?
What drivetrain components are compatible with the 2007-2011 Subaru Impreza?
The 2007-2011 Subaru Impreza is equipped with a symmetrical all-wheel-drive (AWD) system. Compatible drivetrain components include the 5-speed manual transmission, 4-speed automatic transmission, and the 5EAT automatic transmission for WRX models. Differential types include open and limited-slip variants. Ensure compatibility by verifying part numbers with Subaru's official catalog or consulting a certified technician.
Q2 What are the maintenance requirements for the Impreza's drivetrain?
What are the maintenance requirements for the Impreza's drivetrain?
Regular maintenance for the Impreza's drivetrain includes checking and replacing transmission fluid every 30,000-60,000 miles, inspecting differential fluid every 30,000 miles, and ensuring proper lubrication of drivetrain components. Additionally, inspect CV joints, axles, and driveshafts for wear or damage. Adhering to Subaru's recommended service intervals ensures optimal performance and longevity of the drivetrain system.
Q3 How do I replace the transmission fluid in a 2007-2011 Subaru Impreza?
How do I replace the transmission fluid in a 2007-2011 Subaru Impreza?
To replace the transmission fluid, first, lift the vehicle securely. Locate the transmission drain plug and remove it to drain the old fluid. Replace the drain plug and refill with the recommended Subaru ATF or manual transmission fluid through the fill plug. Use a fluid pump for precision. Ensure the fluid level is checked with the engine running and transmission in neutral or park.
Q4 What should I do if my Impreza's AWD system is malfunctioning?
What should I do if my Impreza's AWD system is malfunctioning?
If the AWD system malfunctions, check for error codes using an OBD-II scanner. Inspect the transmission and differential fluids for proper levels and contamination. Examine the driveshaft, CV joints, and wheel bearings for damage. If the issue persists, consult a Subaru technician to diagnose potential problems with the transfer case, sensors, or electronic control module.
Q5 How can I optimize the performance of my Impreza's drivetrain?
How can I optimize the performance of my Impreza's drivetrain?
To optimize drivetrain performance, use high-quality synthetic transmission and differential fluids. Upgrade to performance-oriented components like limited-slip differentials or reinforced driveshafts for enhanced traction and durability. Regularly inspect and maintain drivetrain components to prevent wear. Consider tuning the ECU for improved power delivery and smoother shifts in manual or automatic transmissions.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2007-2011 Subaru Impreza Service Manual
Coming SoonComprehensive guide covering drivetrain maintenance, repair procedures, and technical specifications for the 2007-2011 Subaru Impreza.
Subaru Technical Service Bulletin: Drivetrain Updates
Coming SoonLatest updates and fixes for drivetrain-related issues in the 2007-2011 Subaru Impreza, including AWD system improvements and component recalls.
Subaru Impreza Drivetrain Parts Catalog
Coming SoonDetailed catalog of OEM and aftermarket drivetrain components, including transmissions, differentials, and axles for the 2007-2011 Impreza.
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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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