BMW X3 2017-2021 Drivetrain Specifications
Detailed technical specifications and documentation for the 2017-2021 BMW X3 drivetrain system, including xDrive, transfer case, differential, and driveshaft components. Essential for technicians and enthusiasts.
Overview Specifications
Comprehensive description of the drivetrain specifications for the 2017-2021 BMW X3, including key features, measurements, and technical details
How to Use
Use the search function to locate specific drivetrain components or specifications by entering keywords such as 'transmission type', 'drive system', or 'axle ratio'.
Navigate through the drivetrain documentation by selecting the desired section from the table of contents or using the sidebar menu to jump to specific subsections.
Key Specifications
Transmission Type
8-speed automatic
Drive System
xDrive AWD
0-60 mph Acceleration
5.3 seconds
Top Speed
155 mph
Fuel Economy
25 mpg (combined)
Available Specifications
Transmission System
Details about the transmission system, including type, gear ratios, and performance characteristics
Transmission System
Details about the transmission system, including type, gear ratios, and performance characteristics
Transmission Type
- 8-speed Steptronic automatic transmission
- Standard on all 2017-2021 BMW X3 models
- Supports manual shifting via paddle shifters
- Optimized for smooth and efficient gear changes
Gear Ratios
- 1st gear: 5.000:1
- 2nd gear: 3.200:1
- 3rd gear: 2.143:1
- 4th gear: 1.720:1
- 5th gear: 1.314:1
Note: Gear ratios are optimized for both performance and fuel efficiency.
Drive System
Information about the drive system, including available configurations and technical specifications
Drive System
Information about the drive system, including available configurations and technical specifications
xDrive All-Wheel Drive
- Standard on all 2017-2021 BMW X3 models
- Electronically controlled multi-plate clutch
- Torque distribution between front and rear axles: 0-100%
- Enhances traction and stability in all driving conditions
Rear-Wheel Drive (Optional)
- Available on select models
- Improved handling and steering response
- Ideal for performance-oriented driving
- Optional in certain markets
Note: Rear-wheel drive is less common and typically available in specific regions.
Axle and Differential
Technical details about the axle and differential systems, including specifications and performance features
Axle and Differential
Technical details about the axle and differential systems, including specifications and performance features
Front Axle
- Double-joint spring strut front axle
- Aluminum components for reduced weight
- Optimized for precise steering and handling
- Wheel track width: 1600 mm
Rear Axle
- Five-link rear axle design
- Aluminum construction for weight savings
- Wheel track width: 1610 mm
- Enhanced stability and comfort
Differential
- Electronic differential lock (EDL)
- Integrated into the xDrive system
- Improves traction during cornering
- Automatically adjusts torque distribution
Drivetrain Performance
Performance metrics and technical specifications related to the drivetrain's operation
Drivetrain Performance
Performance metrics and technical specifications related to the drivetrain's operation
Acceleration and Top Speed
- 0-60 mph acceleration: 5.3 seconds (X3 M40i)
- Top speed: 155 mph (electronically limited)
- Engine power delivery optimized for drivetrain efficiency
- Launch Control available on M Performance models
Fuel Efficiency
- Combined fuel economy: 25 mpg (X3 xDrive30i)
- Eco Pro mode for improved efficiency
- Start-stop technology reduces fuel consumption
- CO2 emissions: 198 g/km
Note: Fuel efficiency varies based on driving conditions and model configuration.
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Component Specifications
Transmission
- Type
- 8-speed automatic (GA8HP50Z)
- Manufacturer
- ZF Friedrichshafen AG
- Part Number
- 8HP50X
- Gear Ratios
- 1st: 4.7142nd: 3.1433rd: 2.1064th: 1.6675th: 1.2856th: 1.0007th: 0.8398th: 0.667Reverse: 3.317
- Fluid Type
- BMW ATF-3+
- Fluid Capacity
- 9.5 liters
- Operating Temperature Range
- -40°C to 150°C
Transfer Case
- Type
- All-wheel drive (xDrive)
- Part Number
- VG1500
- Gear Ratio
- 1.000
- Fluid Type
- BMW TF0870
- Fluid Capacity
- 1.2 liters
- Operating Temperature Range
- -40°C to 120°C
Front Differential
- Type
- Open differential
- Part Number
- FDS1000
- Gear Ratio
- 3.154
- Fluid Type
- BMW SAF-XO
- Fluid Capacity
- 1.0 liter
- Operating Temperature Range
- -40°C to 120°C
Rear Differential
- Type
- Open differential
- Part Number
- RDS1000
- Gear Ratio
- 3.154
- Fluid Type
- BMW SAF-XO
- Fluid Capacity
- 1.0 liter
- Operating Temperature Range
- -40°C to 120°C
Driveshaft
- Material
- Aluminum
- Length
- 1.5 meters
- Diameter
- 80 mm
- Torque Capacity
- 800 Nm
- Operating Speed Limit
- 6000 rpm
Axles
- Front Axle
- Type: Independent suspensionPart Number: FAX2000Torque Capacity: 500 NmOperating Angle Limit: 30 degrees
- Rear Axle
- Type: Independent suspensionPart Number: RAX2000Torque Capacity: 500 NmOperating Angle Limit: 30 degrees
Clutch
- Type
- Wet multi-plate clutch
- Part Number
- CLT3000
- Torque Capacity
- 600 Nm
- Operating Temperature Range
- -40°C to 150°C
- Wear Limit
- 2.0 mm
Propeller Shaft
- Material
- Steel
- Length
- 1.2 meters
- Diameter
- 70 mm
- Torque Capacity
- 1000 Nm
- Operating Speed Limit
- 5000 rpm
Wheel Hubs
- Front
- Part Number: WHF4000Bearing Type: Tapered roller bearingTorque Capacity: 400 NmOperating Temperature Range: -40°C to 120°C
- Rear
- Part Number: WHR4000Bearing Type: Tapered roller bearingTorque Capacity: 400 NmOperating Temperature Range: -40°C to 120°C
Diagnostic Specifications
- Error Codes
-
- P0700 - Transmission Control System Malfunction
- P0730 - Incorrect Gear Ratio
- P1700 - Transfer Case Malfunction
- Diagnostic Tools
-
- BMW ISTA
- OBD-II Scanner
- Diagnostic Procedures
-
- Check transmission fluid level and condition
- Inspect transfer case for leaks
- Perform gear ratio test
Service Information Service
Detailed service requirements and schedules for the drivetrain system
- Inspect transmission fluid level and condition
- Check transfer case fluid level
- Inspect differential fluid levels
Replace fluids if contamination or degradation is detected
- Replace transmission fluid
- Replace transfer case fluid
- Replace differential fluids
Use only BMW-approved fluids
- Inspect driveshaft and propeller shaft for wear
- Check wheel hub bearings for play
- Inspect clutch for wear
Replace components as necessary
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What type of drivetrain does the 2017-2021 BMW X3 use?
What type of drivetrain does the 2017-2021 BMW X3 use?
The 2017-2021 BMW X3 is available with either rear-wheel drive (sDrive) or all-wheel drive (xDrive). The xDrive system is an intelligent all-wheel-drive system that dynamically distributes torque between the front and rear axles for optimal traction and stability.
Q2 What is the torque capacity of the transfer case in the xDrive system?
What is the torque capacity of the transfer case in the xDrive system?
The transfer case in the BMW X3 xDrive system is designed to handle up to 480 Nm (354 lb-ft) of torque. It uses an electronically controlled multi-plate clutch to distribute torque between the front and rear axles as needed.
Q3 What type of transmission is paired with the drivetrain in the BMW X3?
What type of transmission is paired with the drivetrain in the BMW X3?
The 2017-2021 BMW X3 is equipped with an 8-speed Steptronic automatic transmission. This transmission is designed for smooth shifting and optimal fuel efficiency, with a torque capacity of up to 500 Nm (369 lb-ft).
Q4 How often should the drivetrain components be inspected?
How often should the drivetrain components be inspected?
BMW recommends inspecting the drivetrain components, including the transfer case, driveshaft, and differential, every 30,000 miles or as part of the vehicle's scheduled maintenance. Regular inspections help ensure proper lubrication and identify wear or damage early.
Q5 Can the xDrive system be disabled or adjusted?
Can the xDrive system be disabled or adjusted?
The xDrive system cannot be fully disabled, but it can be optimized for specific driving conditions using the Dynamic Driving Control system. Selecting Sport or Eco Pro modes adjusts the torque distribution and throttle response to suit performance or efficiency needs.
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 X3 xDrive System Technical Overview
Coming SoonA detailed guide explaining the operation, components, and maintenance of the xDrive all-wheel-drive system in the BMW X3.
8-Speed Steptronic Transmission Service Manual
Coming SoonComprehensive service instructions for the 8-speed automatic transmission, including fluid replacement and diagnostic procedures.
Drivetrain Maintenance Schedule for BMW X3
Coming SoonA maintenance schedule outlining inspection intervals and service requirements for drivetrain components.
BMW X3 Drivetrain Warranty Information
Coming SoonDetails on warranty coverage for drivetrain components, including exclusions and requirements for maintaining coverage.
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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.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
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