Audi Audi A8 1994-2002 3.7L Engine Specifications
Detailed technical specifications and documentation for the 3.7L V8 engine in the 1994-2002 Audi A8. Includes performance metrics, system details, and maintenance guidelines.
1994-2002 Audi A8 3.7L Engine Specifications Specifications
This document provides detailed specifications and technical information for the 3.7L engine used in the 1994-2002 Audi A8. It is designed to serve as a comprehensive reference guide for enthusiasts, mechanics, and researchers. The document is organized into sections covering engine overview, performance, technical specifications, maintenance, and modifications. Users can navigate through the sections to find specific information or use the search functionality to locate details quickly.
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Key Specifications
Displacement
3.7 liters
Power
280 horsepower
Torque
295 lb-ft
Fuel Type
Gasoline
Transmission
5-speed automatic
Available Specifications
Engine Overview
This section provides a general overview of the 3.7L engine, including its type, configuration, and key features.
Engine Overview
This section provides a general overview of the 3.7L engine, including its type, configuration, and key features.
Engine Type and Configuration
- 3.7L V8 engine (90° V configuration)
- Dual Overhead Camshaft (DOHC) design
- 32 valves (4 valves per cylinder)
- Aluminum alloy engine block and cylinder heads
- Multipoint fuel injection system
Key Features
- Variable valve timing
- Electronic throttle control
- Catalytic converter with secondary air injection
- Engine management system with knock control
- Integrated engine oil cooler
Performance
This section outlines the performance specifications of the 3.7L engine, including power output, torque, and acceleration times.
Performance
This section outlines the performance specifications of the 3.7L engine, including power output, torque, and acceleration times.
Power and Torque
- Maximum power: 280 horsepower (209 kW) at 5,800 rpm
- Maximum torque: 295 lb-ft (400 Nm) at 4,000 rpm
- Redline: 6,200 rpm
- Power-to-weight ratio: Approximately 10.3 lb/hp
Acceleration and Top Speed
- 0-60 mph (0-97 km/h): 7.5 seconds
- 1/4 mile (400m): 15.8 seconds
- Top speed: Electronically limited to 155 mph (250 km/h)
- Fuel economy: 15 mpg (city), 22 mpg (highway)
Technical Specifications
This section provides detailed technical specifications for the 3.7L engine, including dimensions, capacities, and mechanical details.
Technical Specifications
This section provides detailed technical specifications for the 3.7L engine, including dimensions, capacities, and mechanical details.
Engine Dimensions and Weight
- Displacement: 3.7 liters (222.3 cubic inches)
- Bore x stroke: 92.0 mm x 83.4 mm
- Compression ratio: 10.3:1
- Dry weight: Approximately 395 lbs (179 kg)
Cooling and Lubrication
- Water-cooled engine with dual radiators
- Thermostat-controlled cooling system
- Oil capacity: 6.5 quarts (6.2 liters) with filter
- Recommended oil viscosity: 5W-40 synthetic
Electrical and Ignition
- Dual coil ignition system
- Spark plugs: Platinum-tipped, gapped at 0.028-0.032 in
- Alternator: 120A with voltage regulation
- Starter motor: 1.8 kW high-torque unit
Maintenance and Service
This section provides maintenance and service intervals for the 3.7L engine, including recommended schedules and procedures.
Maintenance and Service
This section provides maintenance and service intervals for the 3.7L engine, including recommended schedules and procedures.
Service Intervals
- Oil change: Every 5,000-7,500 miles (8,000-12,000 km)
- Spark plugs: Replace every 30,000 miles (48,000 km)
- Belts: Timing belt replacement at 90,000 miles (145,000 km)
- Brake fluid: Change every 30,000 miles (48,000 km)
Fluid Capacities
- Engine oil: 6.5 quarts (6.2 liters)
- Coolant: 9.5 liters (10.1 quarts)
- Transmission fluid: 3.5 quarts (3.3 liters)
- Differential fluid: 1.5 quarts (1.4 liters)
Common Modifications and Upgrades
This section outlines common modifications and upgrades for the 3.7L engine, including performance enhancements and reliability improvements.
Common Modifications and Upgrades
This section outlines common modifications and upgrades for the 3.7L engine, including performance enhancements and reliability improvements.
Performance Upgrades
- Engine tuning (ECU remapping)
- Cold air intake system
- High-flow catalytic converters
- Performance exhaust system
- Suspension and braking upgrades
Reliability and Durability
- Upgraded timing belt kit
- High-strength water pump
- Reinforced engine mounts
- Oil cooler upgrade
- Racing-grade spark plugs
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Engine Specifications
Overview
- Type
- V8
- Configuration
- 90-degree V8
- Fuel Type
- Gasoline
- Engine Code
- AHA
- Platform
- Audi D2
Dimensions
- Displacement
- 3.7 liters (3670 cc)
- Power Output
- 230 horsepower (172 kW)
- Torque Output
- 236 lb-ft (320 Nm)
- Engine Weight
- Approx. 395 lbs (179 kg)
- Length
- 27.0 inches (685 mm)
- Width
- 28.5 inches (724 mm)
- Height
- 26.5 inches (673 mm)
Materials
- Engine Block
- Aluminum alloy
- Cylinder Head
- Aluminum alloy
- Crankshaft
- Forged steel
- Valves
- Stainless steel
- Connecting Rods
- Forged steel
Features
- Fuel System
-
- Multi-point fuel injection
- Bosch Motronic engine management
- Variable intake manifold
- Emission Control
-
- Catalytic converter
- EGR system
- Secondary air injection
- Cooling
-
- Water-cooled
- Dual thermostats
- Electric cooling fan
- Ignition
-
- Distributorless ignition
- Coil-on-plug ignition
- Knock sensor
- Lubrication
-
- Wet-sump system
- Pressure feed lubrication
- Oil cooler
Safety Features
- Engine Protection
-
- Overheating protection
- Oil pressure monitoring
- Crankshaft position sensor
- Fuel System Safety
-
- Fuel cut-off in case of crash
- Leak detection
- Evaporative emissions control
- Emission Control Safety
-
- Catalytic converter protection
- EGR system monitoring
- OBD-II compliance
Comfort Features
- Noise Reduction
-
- Acoustic engine cover
- Insulated engine compartment
- Balanced engine design
- Performance
-
- Variable valve timing
- Adaptive engine management
- Responsive throttle
- Convenience
-
- Automatic climate control integration
- Cruise control compatibility
- Remote start capability
Accessories
- Performance Accessories
-
- High-performance air filter
- Sport exhaust system
- Engine tuning software
- Aesthetic Accessories
-
- Chrome engine covers
- Carbon fiber intake manifold
- Custom engine badges
- Functional Accessories
-
- Oil catch can
- Engine block heater
- Performance ignition wires
Maintenance
- Service interval
- Every 5,000 to 7,500 miles (8,000 to 12,000 km)
- Service Items
-
- Oil change
- Filter replacement (air, fuel, cabin)
- Tire rotation
- Brake inspection
- Battery check
- Belts and hoses inspection
- Maintenance Notes
-
- Use synthetic oil meeting Audi specifications
- Inspect and replace spark plugs every 30,000 miles
- Check coolant level and condition regularly
- Inspect drive belts every 15,000 miles
Warranty
- Basic Warranty
- Coverage: 4 years or 50,000 milesDescription: Comprehensive coverage for repairs
- Powertrain Warranty
- Coverage: 5 years or 60,000 milesDescription: Coverage for engine, transmission, and drivetrain
- Corrosion Warranty
- Coverage: 12 yearsDescription: Perforation warranty for body panels
- Emission Warranty
- Coverage: 8 years or 80,000 milesDescription: Coverage for emission-related components
Production Details
- Manufacturer
- Audi AG
- Manufacturing Process
-
- CNC machining
- Aluminum casting
- Balancing and blueprinting
- Quality control testing
- Quality Control
- inspection: Full assembly line inspectionTesting: Dyno testingCertification: Audi factory certification
- Sustainability Practices
-
- Recyclable materials
- Low emissions manufacturing
- Energy-efficient production
- Production Metrics
- Production Years: 1994-2002Units Produced: Approx. 75,000 unitsMarket Regions: Europe, North America, Asia, Middle East
Service Information for 3.7l engine Service
Maintenance and service requirements specific to this component
- Oil and filter change
- Tire pressure check and adjustment
- Brake pad inspection
- Battery terminals cleaning
- Air filter inspection
Essential routine maintenance for optimal performance
- Spark plug replacement
- Drive belts inspection
- Hoses and fluid condition check
- Suspension and steering inspection
- Exhaust system inspection
Intermediate service to ensure longevity
- Timing belt replacement
- Water pump replacement
- Coolant flush and replacement
- Transmission fluid change
- Fuel system cleaning
Major service interval requiring specialized tools
Common Questions
Find answers to common questions about torque specifications
Q1 What is the horsepower and torque output of the 3.7l V8 engine in the 1994-2002 Audi A8?
What is the horsepower and torque output of the 3.7l V8 engine in the 1994-2002 Audi A8?
The 3.7l V8 engine in the 1994-2002 Audi A8 produces 230 horsepower at 5,500 rpm and 235 lb-ft of torque at 3,000 rpm. This engine is designed for smooth power delivery and optimal performance in luxury sedans.
Q2 What type of fuel system does the 3.7l engine use?
What type of fuel system does the 3.7l engine use?
The 3.7l V8 engine utilizes a multi-point fuel injection (MPFI) system. This system ensures precise fuel delivery to each cylinder, improving fuel efficiency and reducing emissions.
Q3 What is the recommended oil type and capacity for the 3.7l engine?
What is the recommended oil type and capacity for the 3.7l engine?
The recommended oil type for the 3.7l engine is 5W-40 synthetic oil. The oil capacity is approximately 7.5 liters (7.9 quarts) when including the oil filter. Always refer to the owner's manual for specific recommendations.
Q4 What is the engine displacement and compression ratio of the 3.7l engine?
What is the engine displacement and compression ratio of the 3.7l engine?
The 3.7l V8 engine has a displacement of 3,698 cc (3.7 liters) and a compression ratio of 10.6:1. This configuration ensures a balance of power and efficiency.
Q5 What is the recommended service interval for the 3.7l engine?
What is the recommended service interval for the 3.7l engine?
Audi recommends servicing the 3.7l engine every 10,000 miles or 12 months, whichever comes first. This includes oil and filter changes, spark plug replacement, and inspection of critical components.
Q6 Does the 3.7l engine require premium fuel?
Does the 3.7l engine require premium fuel?
Yes, the 3.7l V8 engine is designed to run on premium unleaded fuel with an octane rating of 91 or higher. Using lower-octane fuel may result in reduced performance and potential 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 A8 3.7l Engine Service Manual
Coming SoonOfficial service manual for the 3.7l V8 engine, covering maintenance procedures, troubleshooting, and technical specifications.
3.7l Engine Oil Change Guide
Coming SoonStep-by-step guide for performing an oil change on the 3.7l V8 engine, including recommended tools and safety precautions.
Audi A8 3.7l Engine Performance Upgrades
Coming SoonExplore performance upgrades and tuning options for the 3.7l V8 engine, including ECU remapping and exhaust system enhancements.
Common Issues with the 3.7l Engine
Coming SoonA detailed overview of common issues and solutions for the 3.7l V8 engine, including timing belt wear and coolant leaks.
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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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