Audi Audi S8 2012-2018

Audi Audi S8 2012-2018 Drivetrain Specifications

Detailed technical specifications and documentation for the 2012-2018 Audi S8 drivetrain system, including the quattro all-wheel drive, transmission, differential, and related components.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the drivetrain specifications for the 2012-2018 Audi S8, 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', 'differential', or 'torque split'.

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

Key Specifications

Engine Power

520 hp @ 5800-6400 rpm

Torque

650 Nm @ 1700-5500 rpm

Transmission

8-speed Tiptronic

0-100 km/h

3.9 seconds

Fuel Consumption

10.5 L/100 km

Available Specifications

Engine and Transmission

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

Engine Specifications

4.0L TFSI V8 engine producing 520 hp at 5800-6400 rpm
Maximum torque of 650 Nm at 1700-5500 rpm
Direct fuel injection system with Audi Valvelift System
Compression ratio of 10.1:1
Engine weight: 220 kg

Transmission System

8-speed Tiptronic automatic transmission
Quattro all-wheel drive system with self-locking center differential
Torque split: 40:60 front-to-rear under normal conditions
Transmission fluid capacity: 9.5 liters
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)

Note: The Tiptronic transmission supports manual shifting via paddle shifters or the gear selector.

All-Wheel Drive System

Technical details of the Quattro all-wheel drive system, including differentials and torque distribution

Quattro System Overview

Self-locking center differential with asymmetric torque distribution
Dynamic torque vectoring for improved cornering stability
Electronic differential lock (EDL) for individual wheel control
Maximum torque transfer to rear axle: 85%
Maximum torque transfer to front axle: 70%

Differential Specifications

Front differential type: Open with EDL
Rear differential type: Sport differential with torque vectoring
Differential fluid capacity: 1.2 liters
Differential gear ratio: 3.09:1
Differential lock response time: <100 ms

Note: The sport differential enhances agility by actively distributing torque between the rear wheels.

Driveshaft and Axles

Information about the driveshaft, axles, and related components

Driveshaft Specifications

Two-piece driveshaft with center support bearing
Driveshaft diameter: 80 mm
Material: High-strength steel with carbon fiber reinforcement
Maximum rotational speed: 6500 rpm
Driveshaft weight: 18.5 kg

Axle Details

Front axle type: Double wishbone with adaptive air suspension
Rear axle type: Multi-link with adaptive air suspension
Axle ratio: 3.09:1
Axle fluid capacity: 1.5 liters
Axle maximum load capacity: 1200 kg

Note: The adaptive air suspension provides dynamic ride height adjustment for improved performance and comfort.

Performance Metrics

Key performance metrics and measurements for the drivetrain

Acceleration and Top Speed

0-100 km/h acceleration: 3.9 seconds
Top speed: 250 km/h (electronically limited)
Braking distance (100-0 km/h): 34 meters
Power-to-weight ratio: 3.23 kg/hp
Drag coefficient: 0.29 Cd

Fuel Efficiency

Combined fuel consumption: 10.5 L/100 km
CO2 emissions: 246 g/km
Fuel tank capacity: 82 liters
Range: ~780 km on a full tank
Start-stop system for improved efficiency

Note: Fuel efficiency figures are based on the NEDC cycle.

Search Specifications

Search by specification name, value, or description

Component Specifications

Engine

Type: 4.0L TFSI V8

Power Output: 520 hp @ 5800-6400 rpm

Torque: 650 Nm @ 1700-5500 rpm

Compression Ratio: 10.1:1

Fuel System: Direct injection

Part Number: 07P906018

Transmission

Type: 8-speed Tiptronic automatic

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: 0C8900001

Fluid Capacity: 9.5 liters

Fluid Type: Audi Genuine ATF

All Wheel Drive System

Type: Quattro with self-locking center differential

Torque Distribution: Normal: 40:60 front:rear
Dynamic: Up to 70:30 or 15:85 front:rear

Part Number: 0C9100001

Fluid Capacity: 1.2 liters

Fluid Type: Audi Genuine Gear Oil

Differential

Front: Type: Open differential
Gear Ratio: 3.090:1
Part Number: 0C9100002
Fluid Capacity: 1.0 liter
Fluid Type: Audi Genuine Gear Oil

Rear: Type: Sport differential with torque vectoring
Gear Ratio: 3.090:1
Part Number: 0C9100003
Fluid Capacity: 1.0 liter
Fluid Type: Audi Genuine Gear Oil

Driveshaft

Material: High-strength steel

Length: 1.5 meters

Part Number: 0C9100004

Torque Capacity: 800 Nm

Maintenance Interval: Inspect every 30,000 miles

Axles

Front: Type: Independent multi-link suspension
Part Number: 0C9100005
Torque Capacity: 650 Nm
Maintenance Interval: Inspect every 30,000 miles

Rear: Type: Independent multi-link suspension
Part Number: 0C9100006
Torque Capacity: 650 Nm
Maintenance Interval: Inspect every 30,000 miles

Clutch

Type: Wet multi-plate clutch

Part Number: 0C9100007

Torque Capacity: 700 Nm

Fluid Capacity: 0.5 liters

Fluid Type: Audi Genuine Clutch Fluid

Transfer Case

Type: Electronically controlled

Part Number: 0C9100008

Fluid Capacity: 1.5 liters

Fluid Type: Audi Genuine Gear Oil

Maintenance Interval: Inspect every 50,000 miles

Propeller Shaft

Material: Carbon fiber reinforced polymer

Length: 1.2 meters

Part Number: 0C9100009

Torque Capacity: 750 Nm

Maintenance Interval: Inspect every 30,000 miles

Operational Limits

Max Engine Rpm: 7000 rpm

Max Transmission Temp: 120°C

Max Differential Temp: 110°C

Max Torque Output: 650 Nm

Max Speed: 250 km/h (electronically limited)

Service Information Service

Detailed service requirements and schedules for the drivetrain system

10,000

Inspect drivetrain components for wear and damage
Check transmission fluid level and condition
Inspect differential fluid level and condition

Replace fluids if necessary

30,000

Inspect driveshaft and propeller shaft for wear
Check axle boots for cracks and leaks
Inspect clutch system for proper operation

Replace worn components as needed

50,000

Replace transmission fluid
Replace differential fluid
Inspect transfer case for leaks and proper operation

Use only Audi Genuine fluids

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of drivetrain does the 2012-2018 Audi S8 use?

The 2012-2018 Audi S8 features a quattro all-wheel-drive (AWD) system with a self-locking center differential. This system distributes torque asymmetrically, with a default 40:60 front-to-rear torque split, but can adjust dynamically based on driving conditions.

What is the torque capacity of the drivetrain in the Audi S8?

The drivetrain in the 2012-2018 Audi S8 is designed to handle up to 650 Nm (479 lb-ft) of torque, which is the maximum output of the 4.0-liter TFSI V8 engine paired with the 8-speed Tiptronic automatic transmission.

How does the quattro system in the Audi S8 improve performance?

The quattro system enhances performance by providing superior traction and stability, especially in adverse weather conditions. It uses a self-locking center differential and torque vectoring to optimize power delivery to each wheel, improving cornering and acceleration.

What maintenance is required for the Audi S8 drivetrain?

Regular maintenance includes checking and replacing the drivetrain fluids (e.g., differential oil) every 40,000 miles or as specified in the owner's manual. Inspections for wear on the driveshaft, CV joints, and differential components are also recommended.

Can the Audi S8 drivetrain handle off-road conditions?

While the Audi S8's quattro system provides excellent traction, the vehicle is not designed for off-road use. Its low ground clearance and sport-tuned suspension are optimized for high-performance on-road driving.

Factory Service Resources

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

Audi S8 Drivetrain Technical Overview

Coming Soon

Detailed technical specifications and diagrams of the quattro all-wheel-drive system and related components.

Audi S8 Maintenance Schedule

Coming Soon

Official maintenance schedule for the Audi S8, including drivetrain service intervals and procedures.

Quattro System Explained

Coming Soon

An in-depth guide to Audi's quattro all-wheel-drive technology, including its operation and benefits.

Audi S8 Owner's Manual

Coming Soon

The official owner's manual for the 2012-2018 Audi S8, covering drivetrain specifications and care instructions.

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