Audi Audi A4 1995-2000 1.8L Engine Specifications
Detailed technical specifications and documentation for the 1.8L engine in the 1995-2000 Audi A4. Includes performance metrics, system details, and maintenance guidelines for mechanics and enthusiasts.
1995-2000 Audi A4 1.8L Engine Specifications Overview Specifications
This document provides a comprehensive overview of the 1.8L engine specifications for the 1995-2000 Audi A4. It includes detailed technical information, performance metrics, and maintenance guidelines. Use this guide to understand the engine's capabilities, identify key components, and perform routine upkeep. Navigate through the sections to find specific details or use the search functionality to quickly locate information.
How to Use
To search, use the search bar at the top of the document. Type keywords like 'horsepower', 'torque', or 'fuel system' to find relevant information.
Navigate through the sections by scrolling or using the table of contents. Each section is divided into subsections for easy access to specific details.
Key Specifications
Displacement
1.8L (1781 cc)
Power Output
125 HP (93 kW)
Torque Output
129 lb-ft (175 Nm)
Fuel Type
Premium Unleaded (95 RON)
Transmission Options
5-speed Manual / 4-speed Automatic
Available Specifications
Engine Overview
This section provides general information about the 1.8L engine, including its design, architecture, and key features. Understand the engine's layout, fuel system, and technological advancements.
Engine Overview
This section provides general information about the 1.8L engine, including its design, architecture, and key features. Understand the engine's layout, fuel system, and technological advancements.
Engine Design and Architecture
- 1.8L inline-4 cylinder configuration
- DOHC (Dual Overhead Camshaft) design
- 4 valves per cylinder
- Cast iron engine block
- Aluminum alloy cylinder head
Fuel System and Injection
- Multi-point fuel injection system
- Bosch Motronic fuel injection
- Electronic throttle control (later models)
- Fuel pressure: 3.0 bar
- Fuel type: Premium unleaded (95 RON)
Performance Specifications
This section outlines the performance metrics of the 1.8L engine, including horsepower, torque, acceleration, and top speed. Find out how the engine delivers power and responsiveness.
Performance Specifications
This section outlines the performance metrics of the 1.8L engine, including horsepower, torque, acceleration, and top speed. Find out how the engine delivers power and responsiveness.
Power and Torque Output
- Maximum horsepower: 125 HP (93 kW) at 5,800 rpm
- Maximum torque: 129 lb-ft (175 Nm) at 3,950 rpm
- Redline: 6,500 rpm
- Fuel efficiency: Up to 28 mpg combined
- Emissions standards: Euro 2
Acceleration and Top Speed
- 0-60 mph (0-97 km/h): 9.6 seconds
- Top speed: 137 mph (220 km/h) (electronically limited)
- Power-to-weight ratio: 0.11 HP/kg
- Transmission options: 5-speed manual, 4-speed automatic
Technical Specifications
Dive into the technical details of the 1.8L engine, including its dimensions, cooling system, and lubrication. This section is essential for understanding the engine's mechanical aspects.
Technical Specifications
Dive into the technical details of the 1.8L engine, including its dimensions, cooling system, and lubrication. This section is essential for understanding the engine's mechanical aspects.
Engine Dimensions and Weight
- Engine weight: Approximately 300 lbs (136 kg)
- Length: 21.65 in (550 mm)
- Width: 17.72 in (450 mm)
- Height: 24.80 in (630 mm)
Cooling and Lubrication
- Water-cooled engine with thermostat
- Coolant capacity: 4.5 liters
- Engine oil capacity: 4.5 liters (5W-30 synthetic)
- Oil change interval: Every 5,000 to 7,500 miles
- Coolant change interval: Every 50,000 miles
Maintenance and Service
This section provides guidelines for maintaining and servicing the 1.8L engine. Find out the recommended schedules, parts to replace, and common issues to watch out for.
Maintenance and Service
This section provides guidelines for maintaining and servicing the 1.8L engine. Find out the recommended schedules, parts to replace, and common issues to watch out for.
Recommended Maintenance Schedule
- Oil change: Every 5,000 to 7,500 miles
- Spark plug replacement: Every 30,000 miles
- Timing belt replacement: Every 60,000 miles
- Air filter replacement: Every 15,000 miles
- Brake fluid change: Every 30,000 miles
Common Issues and Solutions
- Timing belt failure (if not replaced on time)
- Coolant leaks from the water pump
- Oxygen sensor failure
- Mass airflow sensor issues
- Ignition coil failure
Common Modifications and Upgrades
Explore popular modifications and upgrades for the 1.8L engine. Learn how to enhance performance, improve efficiency, and customize your engine.
Common Modifications and Upgrades
Explore popular modifications and upgrades for the 1.8L engine. Learn how to enhance performance, improve efficiency, and customize your engine.
Performance Upgrades
- Cold air intake installation
- Cat-back exhaust system
- Engine tuning (chipping)
- Lightweight flywheel
- Suspension upgrades
Efficiency and Reliability Upgrades
- High-flow catalytic converter
- Synthetic engine oil conversion
- Upgraded coolant hoses
- Performance spark plugs
- Fuel injector cleaning
Search Specifications
Search by specification name, value, or description
Type to search through torque specifications. Results will appear below as you type.
Engine Specifications
General
- Engine Code
- ADR
- Displacement
- 1.8 liters
- Configuration
- Inline 4-cylinder
- Aspiration
- Naturally aspirated
- Fuel System
- Multi-point fuel injection
- Manufacturer
- Audi AG
- Production Years
- 1995-2000
Performance
- Power Output
- 125 hp @ 5800 rpm
- Torque
- 122 lb-ft @ 3500 rpm
- Compression Ratio
- 10.3:1
- Redline
- 6500 rpm
- Fuel Type
- Premium unleaded (91 octane or higher)
Dimensions
- Bore
- 81.0 mm
- Stroke
- 86.4 mm
- Cylinder Spacing
- 88.0 mm
- Engine Length
- 520 mm
- Engine Width
- 620 mm
- Engine Height
- 650 mm
- Weight
- 135 kg
Cooling System
- Coolant Capacity
- 6.5 liters
- Thermostat Opening Temperature
- 87°C
- Radiator Cap Pressure
- 1.4 bar
- Coolant Type
- G12 (pink) or equivalent
- Water Pump Part Number
- 06A121011H
Lubrication System
- Oil Capacity
- 4.3 liters (with filter)
- Oil Type
- 5W-40 synthetic
- Oil Pressure
- 2.0-4.5 bar @ 2000 rpm
- Oil Filter Part Number
- 06A115561B
- Oil Change interval
- 10,000 miles or 12 months
Ignition System
- Ignition Type
- Distributorless ignition system (DIS)
- Spark Plug Gap
- 0.9-1.1 mm
- Spark Plug Torque
- 25 Nm
- Spark Plug Part Number
- 101000033AA
- Ignition Coil Part Number
- 06B905115R
Fuel System
- Fuel Pump Pressure
- 3.0 bar
- injector Flow Rate
- 150 cc/min
- Fuel Filter Part Number
- 8D0201051C
- Fuel Tank Capacity
- 62 liters
- Fuel Rail Pressure
- 3.8 bar
Timing System
- Timing Belt Interval
- 60,000 miles or 5 years
- Timing Belt Part Number
- 06A109119D
- Tensioner Part Number
- 06A109243C
- Idler Pulley Part Number
- 06A109244A
- Camshaft Position Sensor Part Number
- 06A906433C
Emissions
- Emission Standard
- EURO 2
- Catalytic Converter Part Number
- 8D0254605A
- Oxygen Sensor Part Number
- 06A906262A
- EGR Valve Part Number
- 06A131501B
- Evaporative Emissions Canister Part Number
- 8D0201331A
Maintenance
- Valve Clearance
- Hydraulic lifters (self-adjusting)
- Belt Tension
- Automatic tensioner
- Service interval
- 10,000 miles or 12 months
- Air Filter Part Number
- 8D0129620A
- Cabin Filter Part Number
- 8D0820439A
Diagnostics
- OBD2 Compliance
- Yes
- Fault Code Reading
- Via OBD2 port
- Common Codes
-
- P0171
- P0300
- P0420
- Diagnostic Tool
- VAG-COM or equivalent
- Sensor Reference Voltage
- 5.0 V
Service Information Service
Detailed service requirements and schedules for the 1.8L engine
- Oil and filter change
- Inspect timing belt for wear
- Check coolant level and condition
- Inspect spark plugs
- Check air filter
Use only Audi-approved fluids and parts
- Replace timing belt and tensioner
- Replace water pump
- Inspect accessory belts
- Replace fuel filter
- Inspect exhaust system
Timing belt replacement is critical to prevent engine damage
- Replace oxygen sensor
- Inspect and clean throttle body
- Replace coolant
- Inspect ignition coils
- Check engine mounts
Perform a full diagnostic scan to identify potential issues
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 1995-2000 Audi A4?
What is the horsepower and torque output of the 1.8L engine in the 1995-2000 Audi A4?
The 1.8L engine in the 1995-2000 Audi A4 produces 125 horsepower at 5,800 RPM and 122 lb-ft of torque at 3,500 RPM. This engine is a naturally aspirated inline-4 with a 10.3:1 compression ratio.
Q2 What type of fuel system does the 1.8L engine use?
What type of fuel system does the 1.8L engine use?
The 1.8L engine in the Audi A4 uses a multi-point fuel injection (MPFI) system. This system ensures precise fuel delivery to each cylinder, optimizing combustion efficiency and performance.
Q3 What is the recommended oil type and capacity for the 1.8L engine?
What is the recommended oil type and capacity for the 1.8L engine?
The recommended oil type for the 1.8L engine is 5W-40 synthetic oil. The oil capacity is approximately 4.5 liters (4.75 quarts) when including the oil filter replacement.
Q4 What is the firing order for the 1.8L engine?
What is the firing order for the 1.8L engine?
The firing order for the 1.8L engine is 1-3-4-2. This sequence ensures proper ignition timing and smooth engine operation.
Q5 What is the valve clearance specification for the 1.8L engine?
What is the valve clearance specification for the 1.8L engine?
The valve clearance for the 1.8L engine is 0.20 mm (0.008 inches) for intake valves and 0.40 mm (0.016 inches) for exhaust valves when the engine is cold. Proper adjustment is critical for optimal performance.
Q6 What is the recommended spark plug gap for the 1.8L engine?
What is the recommended spark plug gap for the 1.8L engine?
The recommended spark plug gap for the 1.8L engine is 0.9 mm (0.035 inches). Use only Audi-approved spark plugs to ensure compatibility and 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 A4 1.8L Engine Service Manual
Coming SoonOfficial service manual for the 1.8L engine, covering maintenance, repair procedures, and technical specifications.
1.8L Engine Timing Belt Replacement Guide
Coming SoonStep-by-step guide for replacing the timing belt on the 1.8L engine, including torque specifications and safety precautions.
Audi Genuine Parts Catalog for 1.8L Engine
Coming SoonCatalog of genuine Audi parts for the 1.8L engine, ensuring compatibility and warranty compliance.
1.8L Engine Troubleshooting Guide
Coming SoonComprehensive troubleshooting guide for common issues with the 1.8L engine, including diagnostic codes and solutions.
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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.
- 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.
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