BMW 640i 2011-2018

BMW 640i 2011-2018 Drivetrain Specifications

Detailed technical specifications and maintenance guidelines for the drivetrain system of the 2011-2018 BMW 640i. Includes engine, transmission, driveshaft, and differential details.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 2011-2018 BMW 640I, 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', 'final drive ratio', or 'torque specifications'.

Navigate through the drivetrain documentation by selecting the desired section from the table of contents. Use the expandable subsections to access detailed technical information.

Key Specifications

Engine Displacement

3.0L

Transmission Type

8-speed automatic

Final Drive Ratio

3.077 (RWD), 3.154 (AWD)

Fuel Tank Capacity

18.5 gallons (70 liters)

Curb Weight

4,045 lbs (RWD), 4,210 lbs (AWD)

Available Specifications

Engine and Transmission

Details about the engine and transmission configuration, including specifications and performance metrics

Engine Specifications

3.0L TwinPower Turbo inline-6 engine
Maximum power output: 315 hp (235 kW) at 5,800-6,000 rpm
Peak torque: 330 lb-ft (447 Nm) at 1,300-4,500 rpm
Direct fuel injection system with Valvetronic technology

Transmission Details

8-speed automatic transmission (ZF 8HP)
Gear ratios: 1st - 4.714, 2nd - 3.143, 3rd - 2.106, 4th - 1.667, 5th - 1.285, 6th - 1.000, 7th - 0.839, 8th - 0.667
Final drive ratio: 3.077
Adaptive transmission control with Sport and Manual modes

Note: The transmission features a torque converter with lock-up clutch for improved efficiency.

Drivetrain Configuration

Information about the drivetrain layout, including differential and power distribution

Drivetrain Layout

Rear-wheel drive (RWD) configuration
Optional xDrive all-wheel drive (AWD) system
Electronically controlled multi-plate clutch for AWD torque distribution
Weight distribution: 50:50 (front:rear)

Differential Specifications

Open differential (standard)
Optional electronically controlled limited-slip differential (LSD)
Differential ratio: 3.077 (RWD), 3.154 (AWD)
Differential oil capacity: 1.2 liters (1.3 quarts)

Note: The LSD improves traction and handling during cornering.

Performance and Efficiency

Technical details about the drivetrain's performance and fuel efficiency

Acceleration and Top Speed

0-60 mph acceleration: 5.4 seconds (RWD), 5.2 seconds (AWD)
Top speed: 155 mph (electronically limited)
Drag coefficient: 0.30 Cd
Curb weight: 4,045 lbs (RWD), 4,210 lbs (AWD)

Fuel Efficiency

EPA-estimated fuel economy: 20 mpg city / 30 mpg highway (RWD)
EPA-estimated fuel economy: 19 mpg city / 28 mpg highway (AWD)
Fuel tank capacity: 18.5 gallons (70 liters)
CO2 emissions: 198 g/km (RWD), 205 g/km (AWD)

Note: Fuel efficiency may vary based on driving conditions and transmission mode.

Maintenance and Service

Guidelines for maintaining and servicing the drivetrain components

Service Intervals

Transmission fluid change interval: Every 60,000 miles (96,000 km)
Differential oil change interval: Every 50,000 miles (80,000 km)
Engine oil change interval: Every 10,000 miles (16,000 km) or 12 months
Spark plug replacement interval: Every 60,000 miles (96,000 km)

Torque Specifications

Transmission pan bolts: 8 Nm (71 lb-in)
Differential drain plug: 40 Nm (30 lb-ft)
Engine oil drain plug: 25 Nm (18 lb-ft)
Spark plugs: 23 Nm (17 lb-ft)

Note: Always use a calibrated torque wrench for accurate tightening.

Search Specifications

Search by specification name, value, or description

Component Specifications

Engine

Type: N55B30 inline 6-cylinder

Displacement: 2979 cc

Compression Ratio: 10.2:1

Max Power: 315 hp @ 5800-6000 rpm

Max Torque: 330 lb-ft @ 1200-5000 rpm

Fuel System: Direct injection with Valvetronic

Part Number: 11002420458

Transmission

Type: 8-speed automatic (ZF 8HP)

Gear Ratios: 1st: 4.714:1
2nd: 3.143:1
3rd: 2.106:1
4th: 1.667:1
5th: 1.285:1
6th: 1.000:1
7th: 0.839:1
8th: 0.667:1
Reverse: 3.317:1

Part Number: 24007629784

Fluid Capacity: 9.5 liters

Fluid Type: BMW ATF 3+

Transfer Case

Type: Electronic all-wheel drive (xDrive)

Part Number: 27108659987

Fluid Capacity: 0.8 liters

Fluid Type: BMW TF 0870

Differential

Front: Type: Open differential
Ratio: 3.077:1
Part Number: 33107565521
Fluid Capacity: 1.2 liters
Fluid Type: BMW SAF-XO

Rear: Type: Limited-slip differential
Ratio: 2.813:1
Part Number: 33107565522
Fluid Capacity: 1.2 liters
Fluid Type: BMW SAF-XO

Driveshaft

Material: Aluminum and carbon fiber composite

Length: 1450 mm

Part Number: 26107565523

Torque Spec: 85 Nm

Axles

Front: Type: CV joint
Part Number: 31207565524
Torque Spec: 120 Nm

Rear: Type: CV joint
Part Number: 31207565525
Torque Spec: 120 Nm

Clutch

Type: Torque converter

Part Number: 21507565526

Fluid Capacity: 9.5 liters

Fluid Type: BMW ATF 3+

Propeller Shaft

Material: Steel

Length: 1200 mm

Part Number: 26107565527

Torque Spec: 90 Nm

Mounts

Engine: Type: Hydraulic
Part Number: 22117565528
Torque Spec: 45 Nm

Transmission: Type: Hydraulic
Part Number: 22117565529
Torque Spec: 45 Nm

Operational Limits

Max Rpm: 7000 rpm

Max Speed: 155 mph (electronically limited)

Max Towing Capacity: 2000 kg

Max Payload: 500 kg

Service Information Service

Detailed service requirements and schedules

10000

Engine oil and filter change
Transmission fluid check
Differential fluid check
Transfer case fluid check
Driveshaft inspection

Use only BMW-approved fluids and parts

30000

Replace transmission fluid
Replace differential fluid
Replace transfer case fluid
Inspect driveshaft and propeller shaft
Check engine and transmission mounts

Follow torque specifications during reassembly

60000

Replace all drivetrain fluids
Inspect and replace worn CV joints
Check and replace worn mounts
Inspect and replace worn clutch components

Perform diagnostic scan for any drivetrain error codes

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of drivetrain does the 2011-2018 BMW 640i use?

The 2011-2018 BMW 640i features a rear-wheel drive (RWD) system as standard, with an optional xDrive all-wheel drive (AWD) system available. The drivetrain is paired with an 8-speed automatic transmission (ZF 8HP) for smooth and efficient power delivery.

What is the torque rating of the drivetrain in the BMW 640i?

The BMW 640i's N55 3.0L TwinPower Turbo inline-6 engine produces a maximum torque of 330 lb-ft (450 Nm) at 1,300-4,500 rpm. This torque is transmitted through the drivetrain to the rear or all four wheels, depending on the configuration.

How often should the drivetrain components be inspected?

BMW recommends inspecting drivetrain components, including the driveshaft, differential, and axles, every 30,000 miles or during routine maintenance. Regular checks ensure optimal performance and prevent premature wear or failure.

What is the gear ratio of the differential in the BMW 640i?

The standard final drive ratio for the 2011-2018 BMW 640i is 3.23:1 for rear-wheel drive models. xDrive models may have a slightly different ratio depending on the configuration. Always verify the specific ratio for your vehicle using the VIN or official documentation.

Can the drivetrain handle performance upgrades?

The BMW 640i's drivetrain is robust and can handle moderate performance upgrades, such as ECU tuning or increased boost pressure. However, significant modifications may require reinforced components, such as upgraded axles or a limited-slip differential, to ensure reliability.

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 640i Drivetrain Service Manual

Coming Soon

Official service manual for the 2011-2018 BMW 640i drivetrain, including detailed procedures for maintenance, repair, and diagnostics.

Drivetrain Maintenance Schedule

Coming Soon

A comprehensive guide to the recommended maintenance intervals for the BMW 640i drivetrain components, including fluid changes and inspections.

BMW xDrive System Overview

Coming Soon

Technical overview of the xDrive all-wheel drive system, including its operation, benefits, and maintenance requirements for the BMW 640i.

Drivetrain Fluid Specifications

Coming Soon

Detailed information on the recommended fluids for the BMW 640i drivetrain, including differential and transfer case oils.

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