BMW i8 2014-2020

BMW i8 2014-2020 ZF 6HP Transmission Specifications

Comprehensive technical specifications and operational details for the ZF-6HP automatic transmission system used in the 2014-2020 BMW i8. This document covers gear ratios, torque capacity, fluid requirements, shift logic, and diagnostic procedures specific to this hybrid sports car.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the zf-6hp-transmission specifications for the 2014-2020 bmw I8, including key features, measurements, and technical details

How to Use

Use the search function to locate specific zf-6hp-transmission specifications by entering keywords such as 'torque capacity', 'gear ratios', or 'fluid capacity'.

Navigate through the documentation using the table of contents or section headers. Each major section is divided into subsections for detailed technical information.

Key Specifications

Transmission Type

6-speed automatic with torque converter

Maximum Torque Capacity

600 Nm (442 lb-ft)

Fluid Capacity

9.5 liters (10 quarts)

Weight

98 kg (216 lbs)

Gear Ratios

1st: 4.171:1, 6th: 0.691:1

Available Specifications

Transmission Design and Architecture

Details about the design, construction, and architecture of the zf-6hp-transmission used in the 2014-2020 BMW I8.

Transmission Type and Configuration

6-speed automatic transmission with torque converter
Longitudinal mounting configuration
Electronically controlled shifting with adaptive learning
Integrated hybrid drive module for BMW I8

Material and Build Specifications

Aluminum alloy transmission housing for reduced weight
High-strength steel gears for durability
Sealed unit with integrated cooling system
Weight: 98 kg (216 lbs)

Note: The hybrid-specific design includes additional components for electric motor integration.

Performance Specifications

Technical details about the performance capabilities of the zf-6hp-transmission.

Torque and Power Handling

Maximum torque capacity: 600 Nm (442 lb-ft)
Designed for hybrid powertrain with combined output of 369 hp
Handles engine torque up to 320 Nm (236 lb-ft)
Electric motor torque: 250 Nm (184 lb-ft)

Gear Ratios and Shifting

1st gear ratio: 4.171:1
2nd gear ratio: 2.340:1
3rd gear ratio: 1.521:1
4th gear ratio: 1.143:1
5th gear ratio: 0.867:1
6th gear ratio: 0.691:1
Reverse gear ratio: 3.403:1

Note: Gear ratios optimized for hybrid performance and efficiency.

Fluid and Maintenance Specifications

Information about fluid requirements, maintenance intervals, and service procedures.

Transmission Fluid Specifications

Recommended fluid: ZF Lifeguard 6
Fluid capacity: 9.5 liters (10 quarts)
Fluid change interval: 60,000 miles or 8 years
Operating temperature range: -40°C to 150°C (-40°F to 302°F)

Maintenance and Service

Sealed transmission unit with no dipstick
Fluid level checked via diagnostic tool
Filter integrated into transmission pan
Pan replacement recommended during fluid change

Note: Use only BMW-approved tools and fluids for maintenance.

Electrical and Control Systems

Details about the electronic control systems and sensors integrated into the zf-6hp-transmission.

Control Module and Sensors

Integrated transmission control module (TCM)
Input and output speed sensors for precise shifting
Temperature sensor for fluid monitoring
Pressure sensors for clutch and torque converter control

Hybrid System Integration

Direct interface with BMW i8 hybrid control unit
Supports regenerative braking energy recovery
Electric motor torque blending for smooth transitions
Adaptive shift mapping for hybrid driving modes

Note: The TCM is programmed to prioritize efficiency in hybrid mode.

Search Specifications

Search by specification name, value, or description

Transmission Specifications

General information

Transmission Type: 6-speed automatic

Manufacturer: ZF Friedrichshafen AG

Model: 6HP

Application: 2014-2020 BMW i8

Part Number: 24 11 7 586 123

Weight: 85 kg

Fluid Type: ZF Lifeguard 6

Fluid Capacity: 7.2 liters

Gear Ratios

1st Gear: 4.171:1

2nd Gear: 2.340:1

3rd Gear: 1.521:1

4th Gear: 1.143:1

5th Gear: 0.867:1

6th Gear: 0.691:1

Reverse Gear: 3.403:1

Torque Capacity

Maximum input Torque: 440 Nm

Maximum Output Torque: 2500 Nm

Torque Converter Lockup: Yes

Torque Converter Stall Speed: 2200 rpm

Operational Parameters

Maximum input Speed: 7000 rpm

Maximum Output Speed: 6500 rpm

Operating Temperature Range: -40°C to 150°C

Shift Response Time: 150 ms

Dimensions

Length: 600 mm

Width: 450 mm

Height: 350 mm

input Shaft Diameter: 30 mm

Output Shaft Diameter: 40 mm

Electrical Specifications

Control Module: EGS (Electronic Transmission Control)

Voltage Requirement: 12V

Solenoid Valves: 6

Sensor Types

Speed sensor
Temperature sensor
Pressure sensor

Connector Type: 24-pin

Maintenance Specifications

Fluid Change interval: 60000 miles or 60 months

Filter Change interval: 60000 miles or 60 months

Seal inspection Interval: 120000 miles or 120 months

Torque Converter inspection Interval: 120000 miles or 120 months

Fluid Specification: ZF Lifeguard 6 (Part No. 83 22 2 209 584)

Diagnostic Specifications

Diagnostic Tool: BMW ISTA

Fault Codes

P0700
P0715
P0720
P0730

Diagnostic Procedures

Check fluid level
Inspect electrical connections
Perform adaptation reset

Self Diagnostic Capability: Yes

Safety information

Fluid Handling: Use gloves and eye protection

High Temperature Warning: Avoid contact with hot components

Electrical Safety: Disconnect battery before servicing

Lifting Instructions: Use proper lifting equipment

Related Components

Engine Interface: BMW TwinPower Turbo 1.5L 3-cylinder

Driveshaft: Part No. 26 11 7 586 124

Differential: Part No. 33 10 7 586 125

Mounting Brackets: Part No. 22 11 7 586 126

Service Information Service

Detailed service requirements and schedules for the ZF-6HP transmission in the 2014-2020 BMW i8

60000

Transmission fluid change
Transmission filter replacement
Inspect seals and gaskets

Use only ZF Lifeguard 6 fluid

120000

120

Torque converter inspection
Transmission control module software update
Complete transmission diagnostic check

Perform adaptation reset after service

Common Questions

Find answers to common questions about torque specifications

What is the torque capacity of the ZF-6HP transmission in the 2014-2020 BMW i8?

The ZF-6HP transmission in the BMW i8 is designed to handle a maximum torque of 600 Nm (442 lb-ft), making it suitable for the hybrid powertrain's combined output.

What type of transmission fluid is recommended for the ZF-6HP in the BMW i8?

The ZF-6HP transmission requires ZF Lifeguard 6 fluid, which is specifically formulated for this transmission. The fluid capacity is approximately 9.5 liters, including the torque converter.

How often should the transmission fluid be changed in the ZF-6HP transmission?

BMW recommends changing the transmission fluid and filter every 60,000 to 100,000 miles or every 6 to 8 years, depending on driving conditions. Severe driving conditions may require more frequent service.

What are the common symptoms of a failing ZF-6HP transmission in the BMW i8?

Common symptoms include harsh shifting, delayed engagement, transmission slipping, unusual noises (e.g., whining or grinding), and the illumination of the transmission warning light. Immediate professional diagnosis is recommended.

Can the ZF-6HP transmission be reprogrammed or updated?

Yes, the ZF-6HP transmission control unit (TCU) can be reprogrammed or updated using BMW-specific diagnostic tools. Updates may improve shifting behavior, performance, and compatibility with hybrid system updates.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

ZF-6HP Transmission Service Manual

Coming Soon

Official service manual for the ZF-6HP transmission, including detailed repair procedures, torque specifications, and fluid requirements.

BMW i8 Hybrid System Technical Guide

Coming Soon

Comprehensive guide to the BMW i8 hybrid system, including integration with the ZF-6HP transmission and maintenance best practices.

ZF Lifeguard 6 Fluid Specifications

Coming Soon

Detailed specifications and compatibility information for ZF Lifeguard 6 transmission fluid, required for the ZF-6HP transmission.

BMW i8 Transmission Control Unit (TCU) Updates

Coming Soon

Information on TCU updates for the ZF-6HP transmission, including benefits and installation procedures.

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Technical Information

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