Audi Audi S3 1999-2003

Audi Audi S3 1999-2003 1.8L Engine Specifications

Detailed technical specifications and documentation for the 1.8L turbocharged engine in the 1999-2003 Audi S3. Includes performance metrics, component details, and maintenance guidelines.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the 1.8l-engine specifications for the 1999-2003 Audi S3, including key features, measurements, and technical details

How to Use

Use the search function to locate specific 1.8l-engine specifications by entering keywords such as 'torque', 'compression ratio', or 'fuel system'.

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

Key Specifications

Displacement

1.8 liters (1781 cc)

Power Output

210 PS (154 kW) at 5800 rpm

Torque

270 Nm (199 lb-ft) at 2100-5000 rpm

Compression Ratio

9.5:1

Fuel System

Sequential multi-point injection

Available Specifications

Engine Design and Configuration

Details about the engine's design, layout, and configuration

Engine Type and Layout

1.8-liter inline 4-cylinder turbocharged engine
DOHC (Dual Overhead Camshaft) design
20-valve configuration (5 valves per cylinder)
Longitudinal engine placement

Cylinder Block and Head

Cast iron cylinder block for durability
Aluminum cylinder head for weight reduction
Bore: 81.0 mm, Stroke: 86.4 mm
Compression ratio: 9.5:1

Note: The aluminum cylinder head improves heat dissipation and reduces overall engine weight.

Performance Specifications

Technical details about the engine's performance capabilities

Power and Torque

Maximum power output: 210 PS (154 kW) at 5800 rpm
Peak torque: 270 Nm (199 lb-ft) at 2100-5000 rpm
Turbocharger: K04 turbocharger with intercooler
Redline: 7000 rpm

Fuel System and Efficiency

Sequential multi-point fuel injection
Fuel type: Premium unleaded (95 RON or higher)
Fuel consumption: 9.2 L/100 km (combined)
Emissions compliance: Euro 3 standards

Note: The K04 turbocharger provides improved boost pressure for enhanced performance.

Cooling and Lubrication

Information about the engine's cooling and lubrication systems

Cooling System

Liquid-cooled with a pressurized system
Radiator capacity: 6.5 liters
Thermostat opening temperature: 87°C
Electric cooling fan with two-speed operation

Lubrication System

Wet sump lubrication system
Oil capacity: 4.3 liters (including filter)
Recommended oil grade: 5W-40 fully synthetic
Oil change interval: 15,000 km or 12 months

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

Electrical and Ignition System

Details about the engine's electrical and ignition components

Ignition System

Direct ignition system with individual coil packs
Spark plug type: Bosch FR6KTC
Spark plug gap: 0.8 mm
Ignition timing: 12° BTDC at idle

Electrical System

12-volt electrical system
Alternator output: 120 A
Battery capacity: 63 Ah
Starter motor power: 1.4 kW

Note: The direct ignition system improves combustion efficiency and reliability.

Search Specifications

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Engine Specifications

General Specifications

Engine Code: AMK

Displacement: 1.8 liters (1781 cc)

Configuration: Inline 4-cylinder, turbocharged

Bore: 81.0 mm

Stroke: 86.4 mm

Compression Ratio: 9.5:1

Fuel System: Multi-point fuel injection (MPI)

Fuel Type: Premium unleaded (95 RON minimum)

Emission Standard: EURO 3

Performance

Max Power: 225 hp @ 5900 rpm

Max Torque: 280 Nm @ 2200-5500 rpm

Redline: 7000 rpm

0-100 Kmh: 6.6 seconds

Top Speed: 245 km/h (electronically limited)

Turbocharger

Type: K04 turbocharger

Boost Pressure: 0.8 bar (11.6 psi)

Wastegate Actuation: Mechanical

intercooler: Front-mounted air-to-air intercooler

Part Number: 06A 145 702 K

Ignition System

Ignition Type: Direct ignition system (DIS)

Spark Plug: NGK BKR6EKU (part number: 101 000 033 AA)

Spark Plug Gap: 0.7-0.8 mm

Ignition Coil: Integrated coil-on-plug design

Ignition Timing: Adjustable via ECU

Lubrication System

Oil Capacity: 4.3 liters (with filter)

Oil Type: VW 502 00 / 505 00 specification

Oil Pressure: 2.0-4.5 bar at 2000 rpm

Oil Filter Part Number: 06A 115 561 B

Oil Change interval: 15,000 km or 12 months

Cooling System

Coolant Capacity: 7.0 liters

Coolant Type: G12 (pink) coolant

Thermostat Opening Temp: 87°C

Radiator Part Number: 8N0 121 251 C

Water Pump Part Number: 06A 121 011 H

Valvetrain

Valve Configuration: DOHC, 20 valves (5 valves per cylinder)

Valve Clearance: Hydraulic lifters (self-adjusting)

Camshaft Material: Forged steel

Camshaft Drive: Timing belt

Timing Belt Part Number: 06A 109 119 D

Timing Belt Change Interval: 120,000 km or 5 years

Fuel injection

injector Type: Bosch EV6

injector Flow Rate: 280 cc/min

Fuel Pressure: 3.8 bar

Fuel Pump Part Number: 8N0 906 091

Fuel Filter Part Number: 8N0 201 511

Exhaust System

Exhaust Manifold: Cast iron, integrated with turbocharger

Catalytic Converter: Metal substrate, 400 cells per square inch

Downpipe Part Number: 8N0 253 609 A

Exhaust Backpressure: Max 0.3 bar at full load

Engine Management

Ecu Type: Bosch ME7.5

Ecu Part Number: 8N0 906 018 D

Sensors

Mass airflow sensor (MAF)
Knock sensors (2x)
Coolant temperature sensor
Crankshaft position sensor
Camshaft position sensor

Diagnostic interface: OBD-II compliant

Maintenance Specifications

Valve Adjustment: Not required (hydraulic lifters)

Spark Plug Replacement: Every 60,000 km

Timing Belt Replacement: Every 120,000 km or 5 years

Auxiliary Belt Replacement: Every 60,000 km

Coolant Replacement: Every 2 years

Fuel Filter Replacement: Every 60,000 km

Service Information Service

Detailed service requirements and schedules for the 1.8L engine

15,000 km

Oil and filter change
Inspect timing belt condition
Check coolant level and condition
Inspect spark plugs
Check all fluid levels

Use only VW 502 00 / 505 00 specification oil

60,000 km

Replace spark plugs
Replace fuel filter
Replace auxiliary drive belt
Inspect brake system
Check suspension components

Inspect turbocharger system for leaks

120,000 km

Replace timing belt and tensioner
Replace water pump
Replace coolant
Inspect camshaft and valve train
Check exhaust system

Timing belt replacement is critical to prevent engine damage

Common Questions

Find answers to common questions about torque specifications

What is the horsepower and torque output of the 1.8L engine in the 1999-2003 Audi S3?

The 1.8L turbocharged inline-4 engine in the 1999-2003 Audi S3 produces 210 horsepower at 5,800 rpm and 199 lb-ft of torque at 2,200-4,200 rpm. This engine is equipped with a K04 turbocharger and features 20-valve DOHC technology.

What type of fuel system does the 1.8L engine use?

The 1.8L engine in the Audi S3 utilizes a multi-point fuel injection (MPFI) system. It operates with a fuel pressure of approximately 4.0 bar (58 psi) and requires premium unleaded fuel with a minimum octane rating of 95 RON.

What is the recommended oil type and capacity for the 1.8L engine?

The 1.8L engine requires fully synthetic oil meeting VW 502 00 or 505 00 specifications. The oil capacity is approximately 4.3 liters (4.5 quarts) with a filter change. Always use an OEM or equivalent oil filter for optimal performance.

What is the compression ratio of the 1.8L engine?

The 1.8L turbocharged engine in the Audi S3 has a compression ratio of 9.5:1. This ratio is optimized for turbocharging, balancing performance and efficiency.

How often should the timing belt be replaced on the 1.8L engine?

Audi recommends replacing the timing belt every 60,000 miles or 5 years, whichever comes first. Failure to replace the timing belt on schedule can result in catastrophic engine damage due to interference design.

What is the recommended spark plug gap for the 1.8L engine?

The recommended spark plug gap for the 1.8L engine is 0.7-0.8 mm (0.028-0.031 inches). Use only spark plugs specified by Audi, such as NGK BKR6EKU or equivalent, to ensure proper ignition performance.

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 S3 1.8L Engine Service Manual

Coming Soon

Official service manual for the 1.8L engine, covering maintenance, repair procedures, and technical specifications.

Turbocharger Maintenance Guide for 1.8L Engines

Coming Soon

Detailed guide on maintaining and troubleshooting the K04 turbocharger used in the 1.8L engine.

Timing Belt Replacement Procedure

Coming Soon

Step-by-step instructions for replacing the timing belt on the 1.8L engine, including torque specifications and alignment marks.

Fuel System Diagnostics for 1.8L Engines

Coming Soon

Comprehensive guide to diagnosing and repairing fuel system issues in the 1.8L engine.

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Technical Information

All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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