Positioning:
Performance sedan in the luxury compact executive car segment.
Key Competitors:
BMW 3 Series (E46), Mercedes-Benz C-Class (W202/W203), Alfa Romeo 156.
Performance Focus:
The B5 S4 is renowned for its powerful twin-turbocharged V6 engine, quattro all-wheel-drive system, and sport-tuned suspension, making it a driver-focused performance machine.
Diy Appeal:
Designed to empower owners with the knowledge and procedures to perform maintenance and repairs themselves, saving costs and enhancing vehicle understanding.
Primary Focus:
Engine Service and Repair
Included Systems:
Engine, Transmission, Brakes, Electrical, Suspension, Steering, Cooling, Fuel Injection, Emission Control, HVAC, Engine Control Systems, Chassis, Body, Differential, Axles
Estimated Page Count:
Comprehensive (Exact count not provided, but implies extensive detail for all workshop procedures)
Type:
Service Workshop Manual / Repair Manual
Engine:
Detailed procedures for engine disassembly, assembly, diagnostics, repair, and overhaul. Covers all internal and external engine components.
Transmission:
Service and repair procedures for the transmission, including removal, installation, internal components, and troubleshooting.
Brakes:
Diagnosis, repair, and maintenance of the braking system, including hydraulic components and ABS.
Electrical:
Comprehensive coverage of the electrical system, including wiring diagrams, component testing, and troubleshooting.
Suspension Steering:
Service and repair procedures for suspension and steering components, including alignment specifications.
Cooling Fuel:
Detailed information on the cooling system and fuel injection/fuel system components and operation.
Emission HVAC:
Procedures for the emission control system and the heater/air conditioning system.
Engine Control:
Diagnosis and repair of the engine control system (ECU), sensors, and actuators.
Chassis Body:
Information on chassis components and bodywork repair procedures.
Restraint Interior:
Service for restraint systems (airbags) and interior components.
Differential Axle:
Service and repair for differential and axle components.
Diagnostic Procedures:
Step-by-step troubleshooting guides for common and complex issues.
Maintenance Tasks:
Covers general maintenance, periodic lubrication, and fluid changes.
Repair Instructions:
Detailed instructions for component removal, installation, and repair.
Rebuild Procedures:
Comprehensive procedures for engine and transmission rebuilds.
Depth:
Workshop level. Suitable for DIY enthusiasts and professional mechanics. Includes detailed diagrams and specifications for all workshop procedures.
Engine Code Variants:
APB (US Market), AGB (European Market)
Displacement:
2.7 liters (2671 cc)
Configuration:
2.7L 90-degree V6
Aspiration:
Twin-Turbocharged
Horsepower:
250 hp @ 5800-6300 rpm
Torque:
258 lb-ft (350 Nm) @ 1800-3500 rpm
Fuel Delivery:
Multi-point Fuel Injection (MPI) with Bosch Motronic engine management.
Cylinder Head:
DOHC (Dual Overhead Camshafts) per bank, 5 valves per cylinder.
Bore X Stroke:
81.0 mm x 86.4 mm
Cooling Type:
Liquid-cooled
Airbags:
Front dual-stage airbags, front side-impact airbags.
Seatbelts:
Three-point inertia-reel seatbelts with front belt tensioners.
ABS:
Anti-lock Braking System (ABS).
Esp:
Electronic Stability Program (ESP).
NHTSA Front Impact:
4/5 stars (Driver/Passenger) - 2000 model year.
Audio System:
Audi Chorus or Concert CD/RDS audio systems, with optional Bose sound system.
Navigation:
Optional Audi Navigation System Plus (RNS-D) with integrated screen and CD-ROM based maps.
Parking Sensors:
Optional rear parking sensors (Audi Parking System).
Phone Integration:
Optional factory-installed Bluetooth or cellular phone preparation.
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or 12 months, depending on driving conditions. Consult manual for specific recommendations.
Timing Belt Replacement:
Crucial: 60,000 - 90,000 miles (96,000 - 144,000 km) or 5-7 years. Failure can cause catastrophic engine damage.
Engine Oil Type:
SAE 0W-40 or 5W-40 Synthetic, API SN/CF or ACEA A3/B4 compliant. Check manual for exact specification.
Coolant Type:
G12 or G12+ antifreeze concentrate (pink/red color), mixed 50/50 with distilled water.
Transmission Fluid Manual:
API GL-4 or GL-5 synthetic gear oil (e.g., 75W-90). Consult manual for specific PN.
Transmission Fluid Automatic:
Audi G 052 162 A1/A2 or equivalent ATF. Consult manual for specific PN.
Common Wear Items:
Coil packs, mass airflow sensors (MAF), PCV system, oil leaks (valve cover gaskets, oil cooler seals), front control arms, and the timing belt service are critical.
Specific Engine Concerns:
The 2.7T engine's twin-turbo setup can be prone to boost leaks and requires meticulous maintenance. The stock intercoolers are often undersized, leading to heat soak under aggressive driving. Cam timing adjustments can be necessary over time.
Heritage:
Audi has a long history of engineering excellence, particularly in quattro all-wheel-drive technology and performance-oriented vehicles.
B5 Generation Introduction:
The B5 generation Audi A4 was introduced in 1994, with the performance-oriented S4 variant debuting for the 1997 model year (in Europe) and 1999 (in North America).
B5 S4 Specifics:
The B5 S4 distinguished itself with the powerful 2.7L twin-turbo V6 engine, flared wheel arches, sportier suspension, and unique styling cues.
Production Period:
1999-2001
