Audi Audi A4 2001-2004 1.8L Engine Specifications
Detailed technical specifications and service information for the 1.8L turbocharged engine in the 2001-2004 Audi A4. Includes performance data, maintenance schedules, and component-specific details.
2001-2004 Audi A4 1.8L Engine Specifications Specifications
This document provides a comprehensive overview of the 1.8L engine specifications for the 2001-2004 Audi A4. It includes detailed technical information, performance metrics, and maintenance guidelines. Use this guide to understand the engine's capabilities, identify components, and perform routine maintenance. Navigate through the sections to find specific details or use the quick reference for key specifications.
How to Use
To search for specific information, use the 'Find' function (Ctrl+F or Cmd+F) and type keywords related to the section or component you're looking for. This helps quickly locate details within the document.
Navigate through the document by scrolling through the sections. Each major section is clearly titled, and subsections provide detailed information. Use the table of contents or quick reference for faster access.
Key Specifications
Displacement
1.8 liters (1,781 cc)
Power Output
170 horsepower @ 6,200 rpm
Torque
163 lb-ft @ 3,800 rpm
Fuel System
Sequential fuel injection
Engine Type
1.8L inline-4 DOHC
Available Specifications
Engine Overview
This section provides an introduction to the 1.8L engine, including its type, configuration, and key features. Understand the basic architecture and design of the engine.
Engine Overview
This section provides an introduction to the 1.8L engine, including its type, configuration, and key features. Understand the basic architecture and design of the engine.
Engine Type and Configuration
- 1.8L inline-4 cylinder engine
- Longitudinal front-engine layout
- Cast iron block with aluminum cylinder head
- Double overhead camshafts (DOHC)
- 4 valves per cylinder
Fuel System
- Fuel-injected system
- Motonronic engine management
- Sequential fuel injection
- 100 RON fuel recommendation
Performance and Power
This section details the engine's performance capabilities, including power output, torque, and acceleration. Learn about the engine's efficiency and driving characteristics.
Performance and Power
This section details the engine's performance capabilities, including power output, torque, and acceleration. Learn about the engine's efficiency and driving characteristics.
Power and Torque Ratings
- 170 horsepower @ 6,200 rpm
- 163 lb-ft torque @ 3,800 rpm
- Redline at 6,500 rpm
- Maximum engine speed 6,800 rpm
Transmission Options
- 5-speed manual transmission
- 4-speed automatic transmission
- Quattro all-wheel drive system
Technical Specifications
This section provides detailed technical specifications for the engine, including dimensions, lubrication, and cooling systems. Use this information for maintenance and repairs.
Technical Specifications
This section provides detailed technical specifications for the engine, including dimensions, lubrication, and cooling systems. Use this information for maintenance and repairs.
Engine Dimensions and Weight
- Length: 434 mm
- Width: 483 mm
- Height: 455 mm
- Dry weight: 156 kg
Lubrication and Cooling
- Wet-sump lubrication system
- Water-cooled engine
- Coolant capacity: 6 liters
- Oil capacity: 4 liters
Maintenance and Service
This section outlines recommended maintenance schedules and service intervals for the 1.8L engine. Follow these guidelines to ensure optimal performance and longevity.
Maintenance and Service
This section outlines recommended maintenance schedules and service intervals for the 1.8L engine. Follow these guidelines to ensure optimal performance and longevity.
Service Intervals
- Oil change interval: every 15,000 km
- Spark plug replacement: every 60,000 km
- Timing belt replacement: every 105,000 km
- Coolant change interval: every 3 years
Recommended Fluids
- Synthetic 5W-40 engine oil
- G12 coolant
- Dexron III transmission fluid
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Engine Specifications
Overview
- Type
- Inline-4 Cylinder
- Configuration
- Turbocharged Petrol Engine
- Fuel Type
- Gasoline
- Platform
- Volkswagen Group A4 (PQ34)
- Assembly Location
- Ingolstadt, Germany
Dimensions
- Engine Weight
- 143 kg (315 lbs)
- Length
- 409 mm (16.1 in)
- Width
- 340 mm (13.4 in)
- Height
- 575 mm (22.6 in)
- Displacement
- 1.8 liters (1781 cc)
- Cylinder Bore
- 81 mm (3.19 in)
- Stroke
- 86.4 mm (3.40 in)
- Compression Ratio
- 9.5:1
Materials
- Engine Block
- Aluminum Alloy
- Cylinder Head
- Aluminum Alloy
- Crankshaft
- Forged Steel
- Connecting Rods
- Cast Aluminum Alloy
- Valves
- Stainless Steel
Features
- Engine Management
-
- Bosch ME7.1 ECU
- Electronic Throttle Control
- Knock Sensor
- Exhaust Gas Recirculation (EGR)
- Secondary Air Injection (SAI)
- Fuel System
-
- Multi-Point Fuel Injection
- Returnless Fuel System
- Electric Fuel Pump
- Cooling System
-
- Water-Cooled
- Electric Cooling Fan
- Thermostat-Controlled
- Exhaust System
-
- Stainless Steel Exhaust Manifold
- Catalytic Converter
- Rear Muffler
- Drivetrain
-
- Front-Wheel Drive (FWD)
- Quattro All-Wheel Drive (Optional)
- Manual Transmission (5-Speed)
- Automatic Transmission (Tiptronic)
Safety Features
- Engine Immune System
-
- Immobilizer III
- Anti-Theft System
- Airbags
-
- Dual Front Airbags
- Side Airbags
- Curtain Airbags
- Emergency Response
-
- Automatic Crash Notification
- Emergency Towing Assistance
Comfort Features
- Climate Control
-
- Automatic Climate Control
- Air Quality Sensor
- Pollent Filter
- infotainment
-
- Symphony II Radio System
- CD Player
- Auxiliary Input
- Seating
-
- Heated Front Seats
- Power Driver Seat
- Leather Upholstery
Accessories
- Maintenance Accessories
-
- Oil Filter Wrench
- Spark Plug Socket
- Coolant Drain Pan
- Performance Accessories
-
- High-Flow Air Filter
- Performance Ignition Coils
- Cat-Back Exhaust System
- Exterior Accessories
-
- Front Spoiler
- Side Skirts
- Rear Diffuser
Maintenance
- Service interval
- Every 15,000 km (9,300 miles) or 12 months
- Service Items
-
- Oil Change
- Oil Filter Replacement
- Tire Rotation
- Brake Inspection
- Belts and Hoses Inspection
- Maintenance Notes
-
- Use synthetic oil (5W-40)
- Inspect wiper blades every 6 months
- Rotate tires every 10,000 km
- Replace air filter every 30,000 km
Warranty
- Basic Warranty
- Coverage: 4 years or 80,000 kmDescription: Bumper-to-Bumper
- Powertrain Warranty
- Coverage: 5 years or 100,000 kmDescription: Drivetrain Components
- Corrosion Warranty
- Coverage: 12 yearsDescription: Perforation
- Roadside Assistance
- Coverage: 4 yearsDescription: 24/7 Assistance
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- Casting
- Machining
- Assembly
- Testing
- Quality Control
- inspection: End-of-line testingCertification: ISO 9001
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient production
- Emission reduction
- Production Metrics
- Annual Production: Approx. 200,000 unitsEngines Per Day: 500 units
Service Information for 1.8l engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Tire rotation
- Brake pads inspection
- Belts and hoses inspection
- Battery test
Check for software updates
- Air filter replacement
- Spark plug replacement
- Fuel system cleaning
- Transmission fluid check
- Exhaust system inspection
Inspect drive belts for wear
- Timing belt replacement
- Water pump replacement
- Coolant flush
- Suspension inspection
- Steering system check
Use genuine Audi parts
Common Questions
Find answers to common questions about torque specifications
Q1 What is the horsepower and torque output of the 1.8L engine in the 2001-2004 Audi A4?
What is the horsepower and torque output of the 1.8L engine in the 2001-2004 Audi A4?
The 1.8L turbocharged inline-4 engine in the 2001-2004 Audi A4 produces 170 horsepower at 5,900 RPM and 166 lb-ft of torque at 1,950 RPM. This engine is equipped with a 5-valve-per-cylinder design and utilizes a K03 turbocharger for enhanced performance.
Q2 What type of oil is recommended for the 1.8L engine, and what is the oil capacity?
What type of oil is recommended for the 1.8L engine, and what is the oil capacity?
Audi recommends using fully synthetic 5W-40 engine oil that meets VW 502.00 specifications. The oil capacity for the 1.8L engine is approximately 4.5 liters (4.75 quarts) with a filter change. Always check the oil level using the dipstick or electronic oil level sensor after refilling.
Q3 What is the service interval for the timing belt on the 1.8L engine?
What is the service interval for the timing belt on the 1.8L engine?
The timing belt on the 1.8L engine should be replaced every 60,000 miles or 5 years, whichever comes first. This is critical to prevent catastrophic engine failure, as the 1.8L engine is an interference engine. The service includes replacing the timing belt, tensioner, and idler pulleys.
Q4 What is the compression ratio of the 1.8L engine?
What is the compression ratio of the 1.8L engine?
The 1.8L turbocharged engine has a compression ratio of 9.3:1. This lower compression ratio is optimized for forced induction, allowing the engine to handle higher boost pressures from the turbocharger without risking detonation.
Q5 What are common issues with the 1.8L engine in the 2001-2004 Audi A4?
What are common issues with the 1.8L engine in the 2001-2004 Audi A4?
Common issues include oil sludge buildup due to insufficient oil changes, turbocharger failure from lack of maintenance, and vacuum leaks in the intake system. Regular maintenance, including frequent oil changes using the correct oil, is essential to prevent these problems.
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 1.8L Engine Maintenance Guide
Coming SoonA detailed guide covering routine maintenance procedures, including oil changes, timing belt replacement, and turbocharger care.
Timing Belt Replacement Procedure
Coming SoonStep-by-step instructions for replacing the timing belt, tensioner, and idler pulleys on the 1.8L engine, including torque specifications and alignment marks.
Turbocharger Troubleshooting and Repair
Coming SoonA resource for diagnosing and repairing common turbocharger issues, including boost leaks, wastegate problems, and turbo failure symptoms.
Oil Sludge Prevention and Cleaning
Coming SoonInformation on preventing oil sludge buildup, including recommended oil change intervals, cleaning procedures, and the use of oil additives.
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
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
About the Author
Expert automotive knowledge and experience
'/%3E%3Cpath d='M60 30a20 20 0 1 1 0 40 20 20 0 0 1 0-40zm0 45c16.5 0 30 7.5 30 16.8V100H30v-8.2c0-9.3 13.5-16.8 30-16.8z' fill='%23404040'/%3E%3C/svg%3E)
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.