BMW 840i 2018-present

BMW 840i 2018-present Drivetrain Specifications

Detailed technical specifications for the 2018-Present BMW 840i drivetrain, including the B58 inline-6 engine, 8-speed Steptronic transmission, and xDrive system. Ideal for technicians, enthusiasts, and repair professionals.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 2018-Present BMW 840i, including key features, measurements, and technical details

How to Use

Use the search bar to find specific drivetrain specifications by entering keywords such as 'transmission type', 'engine power', or 'torque'.

Navigate through the drivetrain documentation sections using the table of contents or by scrolling through the document. Each section is clearly labeled for easy access.

Key Specifications

Engine Type

3.0L TwinPower Turbo inline-6

Transmission

8-speed Steptronic Sport

Horsepower

335 hp (250 kW)

Torque

368 lb-ft (500 Nm)

Fuel Tank Capacity

18.0 gallons (68 liters)

Available Specifications

Engine and Transmission

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

Engine Specifications

3.0L TwinPower Turbo inline-6 engine
Maximum power output: 335 hp (250 kW) at 5500-6500 rpm
Peak torque: 368 lb-ft (500 Nm) at 1600-4500 rpm
Direct fuel injection system with Valvetronic technology
Compression ratio: 11.0:1

Transmission System

8-speed Steptronic Sport automatic transmission
Adaptive shift dynamics for optimized performance
Integrated launch control system
Manual shifting via paddle shifters
Gear ratios: 1st - 5.25:1, 8th - 0.67:1

Note: The transmission system is designed for smooth and responsive gear changes, enhancing both performance and fuel efficiency.

Drivetrain Configuration

Information about the drivetrain layout and components, including differential and drive modes

Drivetrain Layout

Rear-wheel drive (RWD) standard, xDrive all-wheel drive (AWD) optional
Electronically controlled multi-plate clutch for xDrive system
Dynamic Stability Control (DSC) for enhanced traction
Integrated Active Steering for improved handling
Weight distribution: 50:50 (front:rear)

Drive Modes

Eco Pro mode for optimized fuel efficiency
Comfort mode for balanced performance and comfort
Sport mode for enhanced throttle response and handling
Sport+ mode for maximum performance and dynamic driving
Adaptive mode for automatic adjustment based on driving conditions

Note: Drive modes can be selected via the Driving Experience Control switch.

Performance Metrics

Key performance metrics and measurements for the drivetrain system

Acceleration and Top Speed

0-60 mph acceleration: 4.9 seconds (RWD), 4.6 seconds (xDrive)
Top speed: 155 mph (250 km/h) electronically limited
0-100 km/h acceleration: 5.1 seconds (RWD), 4.8 seconds (xDrive)
Braking distance (100-0 km/h): 36.5 meters
Drag coefficient: 0.29 Cd

Fuel Efficiency

Combined fuel consumption: 28 mpg (8.4 L/100 km)
City fuel consumption: 23 mpg (10.2 L/100 km)
Highway fuel consumption: 34 mpg (6.9 L/100 km)
CO2 emissions: 192 g/km
Fuel tank capacity: 18.0 gallons (68 liters)

Note: Fuel efficiency figures are based on EPA estimates and may vary depending on driving conditions.

Cooling and Lubrication

Details about the cooling and lubrication systems for the drivetrain

Cooling System

Liquid-cooled intercooler for turbocharger
Dual electric cooling fans for efficient heat dissipation
Coolant capacity: 12.5 liters
Thermostatically controlled cooling system
Oil cooler integrated into the engine block

Lubrication System

Fully synthetic engine oil recommended
Oil capacity: 6.5 liters
Oil change interval: 10,000 miles (16,000 km) or 12 months
Dual-stage oil pump for optimized lubrication
Oil filter with integrated bypass valve

Note: Regular maintenance of the lubrication system is crucial for optimal engine performance and longevity.

Search Specifications

Search by specification name, value, or description

Component Specifications

Engine

Type: Inline 6-cylinder

Displacement: 2998 cc

Power Output: 335 hp @ 5500-6500 rpm

Torque: 332 lb-ft @ 1500-5200 rpm

Compression Ratio: 11.0:1

Fuel System: Direct Injection

Part Number: B58B30M0

Transmission

Type: 8-speed automatic

Model: 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
Reverse: 3.317

Part Number: 8HP51X

Driveshaft

Material: Carbon fiber reinforced plastic

Length: 1450 mm

Diameter: 80 mm

Part Number: 26107586945

Differential

Type: Electronic Limited Slip Differential (eLSD)

Ratio: 2.81:1

Torque Capacity: 480 Nm

Part Number: 33107586946

Axles

Front Axle: Type: Double-joint spring strut axle
Track Width: 1610 mm
Part Number: 31207586947

Rear Axle: Type: Integral V multi-link axle
Track Width: 1620 mm
Part Number: 33307586948

Transfer Case

Type: All-wheel drive (xDrive)

Torque Split: 40:60 (front:rear)

Part Number: 27207586949

Clutch

Type: Wet multi-plate clutch

Diameter: 240 mm

Torque Capacity: 600 Nm

Part Number: 21507586950

Propeller Shaft

Material: Aluminum

Length: 1200 mm

Diameter: 70 mm

Part Number: 26107586951

Wheel Bearings

Front: Type: Tapered roller bearing
Load Capacity: 4500 kg
Part Number: 31207586952

Rear: Type: Tapered roller bearing
Load Capacity: 5000 kg
Part Number: 33307586953

Lubrication

Engine Oil: Type: Synthetic
Viscosity: 0W-20
Capacity: 6.5 liters

Transmission Fluid: Type: ZF Lifeguard 8
Capacity: 9.5 liters

Differential Fluid: Type: Synthetic 75W-90
Capacity: 1.2 liters

Service Information Service

Detailed service requirements and schedules

10000

Engine oil and filter change
Inspect brake system
Check tire pressure and condition

Use only BMW-approved fluids and parts

30000

Replace air filter
Inspect drive belts
Check transmission fluid level

Ensure all inspections are performed by a certified technician

60000

Replace spark plugs
Inspect suspension components
Replace differential fluid

Follow BMW's recommended service procedures

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of drivetrain does the 2018-Present BMW 840i use?

The 2018-Present BMW 840i features a rear-wheel-drive (RWD) configuration as standard, with an optional xDrive all-wheel-drive (AWD) system. The xDrive system dynamically distributes torque between the front and rear axles for improved traction and handling.

What is the transmission specification for the BMW 840i?

The BMW 840i is equipped with an 8-speed Steptronic Sport automatic transmission. This transmission features adaptive shift dynamics, paddle shifters, and a launch control function for optimized performance.

What is the engine output and torque for the 840i drivetrain?

The 840i is powered by a 3.0-liter BMW TwinPower Turbo inline-6 engine, producing 335 horsepower (250 kW) at 5,500-6,500 rpm and 368 lb-ft (500 Nm) of torque at 1,600-4,500 rpm.

What is the fuel efficiency of the BMW 840i drivetrain?

The BMW 840i achieves an EPA-estimated fuel economy of 23 mpg city, 30 mpg highway, and 26 mpg combined for the RWD model. The xDrive AWD model has slightly lower efficiency at 22 mpg city, 29 mpg highway, and 25 mpg combined.

What is the 0-60 mph acceleration time for the BMW 840i?

The BMW 840i accelerates from 0 to 60 mph in 4.9 seconds for the RWD model and 4.6 seconds for the xDrive AWD model, thanks to its efficient drivetrain and launch control system.

What type of differential is used in the BMW 840i?

The BMW 840i uses an electronically controlled limited-slip differential (optional M Sport Differential) to enhance traction and cornering stability by actively distributing torque between the rear wheels.

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 840i Drivetrain Technical Overview

Coming Soon

Detailed technical specifications and diagrams of the 840i drivetrain, including engine, transmission, and differential components.

BMW xDrive System Explained

Coming Soon

Learn how the xDrive all-wheel-drive system works, its benefits, and how it enhances performance in the BMW 840i.

BMW 8-Speed Steptronic Transmission Guide

Coming Soon

A comprehensive guide to the 8-speed Steptronic Sport automatic transmission, including maintenance tips and performance features.

BMW 840i Maintenance Schedule

Coming Soon

Official maintenance schedule for the BMW 840i drivetrain, including recommended service intervals and procedures.

About the Author

Expert automotive knowledge and experience

ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

Facebook Contact

15+ Years

Experience

500+ Guides

Guides

50+ Makes

Vehicles

1000+ Solutions

Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

ASE Master Technician Certification
Advanced Diagnostic Specialist
Hybrid/Electric Vehicle Systems
Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information

The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.

Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

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.
Always follow the manufacturer's recommended procedures and safety precautions.
Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
If you're unsure about any procedure, consult a qualified professional mechanic.

Intellectual Property

All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.