Audi Audi S8 2012-2018

Audi Audi S8 2012-2018 4.0L Engine Specifications

Detailed technical specifications and documentation for the 4.0L TFSI V8 engine in the 2012-2018 Audi S8. Includes performance data, system details, and maintenance guidelines.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the 4.0l-engine specifications for the 2012-2018 Audi S8, including key features, measurements, and technical details

How to Use

Use the search bar to find specific 4.0l-engine specifications by entering keywords such as 'torque', 'horsepower', or 'compression ratio'.

Navigate through the documentation sections using the table of contents or by scrolling through the major sections and subsections.

Key Specifications

Engine Type

4.0L V8 TFSI

Power Output

520 hp @ 5800-6400 rpm

Torque

650 Nm @ 1700-5500 rpm

Compression Ratio

10.1:1

Fuel System

Direct Injection

Available Specifications

Engine Design and Configuration

Detailed information about the design, layout, and configuration of the 4.0l-engine

Engine Layout

V8 configuration with 90-degree bank angle
Dual overhead camshafts (DOHC) per cylinder bank
Aluminum alloy engine block and cylinder heads
Direct fuel injection system with Audi Valvelift System (AVS)
Turbocharged with twin-scroll turbochargers

Displacement and Compression

Total displacement of 3993 cc (4.0 liters)
Bore x Stroke: 84.5 mm x 89.0 mm
Compression ratio of 10.1:1
Cylinder spacing of 90 mm

Note: The twin-scroll turbochargers reduce turbo lag and improve throttle response.

Performance Specifications

Technical details about the engine's performance metrics

Power and Torque

Maximum power output of 520 hp (382 kW) at 5800-6400 rpm
Peak torque of 650 Nm (479 lb-ft) at 1700-5500 rpm
Redline at 6800 rpm
0-100 km/h (0-62 mph) acceleration in 4.2 seconds

Fuel Efficiency

Combined fuel consumption of 10.5 L/100 km (22.4 mpg)
CO2 emissions of 244 g/km
Start-stop system for improved fuel economy
Thermal management system for optimized engine warm-up

Cooling and Lubrication

Details about the engine's cooling and lubrication systems

Cooling System

Liquid-cooled with dual-circuit cooling system
Electric coolant pump for precise temperature control
Radiator size of 600 mm x 400 mm
Coolant capacity of 12.5 liters

Lubrication System

Wet sump lubrication system
Oil capacity of 9.5 liters (including filter)
Oil pressure of 3.5-4.5 bar at operating temperature
Synthetic oil recommended (SAE 5W-40)

Note: Regular oil changes are critical for maintaining turbocharger longevity.

Emissions and Exhaust

Information about the engine's emissions control and exhaust system

Emissions Control

Complies with Euro 6 emissions standards
Dual catalytic converters with lambda sensors
Exhaust gas recirculation (EGR) system
Particulate filter for reduced emissions

Exhaust System

Dual exhaust system with quad tailpipes
Exhaust valve for adjustable sound profile
Stainless steel construction for durability
Exhaust gas temperature sensor for monitoring

Search Specifications

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Engine Specifications

General

Engine Type: V8 twin-turbocharged

Displacement: 3993 cc

Bore: 84.5 mm

Stroke: 89.0 mm

Compression Ratio: 10.1:1

Engine Code: CEUC

Performance

Max Power: 520 hp @ 5800-6400 rpm

Max Torque: 650 Nm @ 1700-5500 rpm

Redline: 6800 rpm

Fuel System: Direct injection

Fuel Type: Premium unleaded (95 RON)

Turbocharger

Type: Twin-scroll turbochargers

Boost Pressure: 1.2 bar

intercooler Type: Air-to-water

Turbo Lubrication: Engine oil-fed

Turbo Cooling: Engine coolant-fed

Lubrication

Oil Capacity: 9.7 liters

Oil Type: VW 502 00 / 504 00

Oil Change interval: 15000 km or 12 months

Oil Filter Part Number: 06E115562B

Oil Pump Type: Variable displacement

Cooling

Coolant Capacity: 12.5 liters

Coolant Type: G12++ or G13

Thermostat Opening Temp: 87°C

Radiator Part Number: 4G0121251A

Water Pump Type: Electric

Ignition

Ignition System: Coil-on-plug

Spark Plug Type: NGK PLFER7A8EG

Spark Plug Gap: 0.7-0.8 mm

Ignition Coil Part Number: 06E905115E

Ignition Timing: Adjustable via ECU

Fuel injection

injector Type: High-pressure direct injectors

injector Part Number: 06E906036C

Fuel Pressure: 200 bar

Fuel Pump Type: Electric in-tank

Fuel Filter Part Number: 4G0201511

Emissions

Emission Standard: EU6

Catalytic Converter Type: Dual three-way

Oxygen Sensor Type: Wideband

EGR System: Integrated with turbocharger

Particulate Filter: Yes

Maintenance

Timing Chain Interval: Lifetime (inspection every 100000 km)

Belt Drive interval: Not applicable (chain-driven)

Valve Clearance: Hydraulic lifters (no adjustment needed)

Service interval: 15000 km or 12 months

Diagnostic Port: OBD-II

Diagnostics

Common Fault Codes

P0300
P0171
P0299

Diagnostic Tools

VCDS
ODIS

Sensor References: Crankshaft Position Sensor: 06E906433C
Camshaft Position Sensor: 06E907607A
Knock Sensor: 06E905161B

Troubleshooting Notes: Check for boost leaks, fuel pressure, and ignition system integrity

Service Information Service

Detailed service requirements and schedules for the 4.0L V8 engine

15000 km

Oil and filter change
Inspect timing chain and tensioners
Check turbocharger system for leaks
Inspect cooling system for leaks and condition
Check ignition system and replace spark plugs if necessary

Use only Audi-approved fluids and parts

60000 km

Replace air filter
Replace fuel filter
Inspect and clean intake valves for carbon buildup
Check and replace coolant if necessary
Inspect exhaust system and emissions components

Perform additional checks if vehicle is driven under severe conditions

100000 km

Inspect and replace timing chain components if necessary
Replace water pump
Inspect and replace turbocharger components if necessary
Check and replace engine mounts if necessary
Perform full diagnostic scan and clear fault codes

Critical to inspect timing chain components to prevent engine damage

Common Questions

Find answers to common questions about torque specifications

What is the horsepower and torque output of the 4.0L TFSI engine in the 2012-2018 Audi S8?

The 4.0L TFSI V8 engine in the 2012-2018 Audi S8 produces 520 horsepower at 5800-6400 RPM and 481 lb-ft of torque at 1700-5500 RPM. This engine features twin-scroll turbochargers and direct fuel injection for optimal performance.

What type of oil is recommended for the 4.0L TFSI engine?

Audi recommends using VW 502 00 or VW 504 00 approved synthetic engine oil with a viscosity of 5W-40 or 5W-30 for the 4.0L TFSI engine. The oil capacity is approximately 9.7 liters (10.3 quarts) with a filter change.

What is the service interval for the 4.0L TFSI engine?

The recommended service interval for the 4.0L TFSI engine is every 10,000 miles or 12 months, whichever comes first. This includes oil and filter changes, spark plug replacement every 60,000 miles, and timing chain inspection every 100,000 miles.

What is the compression ratio of the 4.0L TFSI engine?

The 4.0L TFSI engine has a compression ratio of 10.1:1, which is optimized for performance and efficiency with its twin-scroll turbocharging system.

Does the 4.0L TFSI engine require premium fuel?

Yes, Audi requires the use of premium unleaded fuel with an octane rating of 91 or higher for the 4.0L TFSI engine to ensure optimal performance and prevent engine knocking.

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 4.0L TFSI Engine Technical Overview

Coming Soon

Detailed technical specifications and performance data for the 4.0L TFSI engine used in the 2012-2018 Audi S8.

Audi S8 Maintenance Schedule

Coming Soon

Official maintenance schedule for the 2012-2018 Audi S8, including service intervals and recommended procedures for the 4.0L TFSI engine.

Audi Genuine Parts Catalog

Coming Soon

Access the official Audi parts catalog to find genuine components for the 4.0L TFSI engine, ensuring compatibility and warranty compliance.

Audi Technical Service Bulletins (TSBs)

Coming Soon

Review technical service bulletins related to the 4.0L TFSI engine for updates, recalls, and common issues.

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Technical Information

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