🏷️ Basic Information Identification Make: Audi Model: A6/S6/RS6 Model Generation: C5 Model Years Covered: 1998, 1999, 2000, 2001, 2002, 2003, 2004 👋 Introduction Market Position Positioning: Premium Executive Sedan and Performance Sedan segment. Competitive Analysis Competitors: BMW 5 Series, Mercedes-Benz E-Class, Lexus GS, Jaguar S-Type, Volvo S80. Key Features A6 Features: Sophisticated styling, comfortable ride, advanced technology, Quattro all-wheel drive. S6 Features: Enhanced performance over A6, sport-tuned suspension, larger engine, distinctive styling cues. Rs6 Features: High-performance variant, significantly more powerful engine (twin-turbo V8), aggressive styling, advanced braking and suspension systems, exclusive to certain markets (e.g., RS6 Plus). Manual Value Proposition Cost Saving: Enables owners to perform repairs and maintenance themselves, saving on labor costs at dealerships or independent shops. 📋 Manual Details Coverage Areas Manual Type: Complete Workshop Service Repair Manual Language: English Format: Downloadable Digital File (PDF) Delivery Method: Instant Email Delivery Models Covered: All Models, Engines, Trim, and Transmission Types 📖 Manual Coverage Systems Covered Engine: Engine Mechanical (including V8, V8 Bi-Turbo), Engine Management Systems (ECU), Fuel System, Ignition System, Emission Control Systems, Cooling System, Lubrication System Transmission: Automatic Transmission (Tiptronic), Manual Transmission, Drive Axles, Differential Chassis: Suspension (Front and Rear), Steering System, Brake System (ABS, ESP), Wheels and Tires Electrical: Body Electrical System, Lighting, Instrumentation, Audio System, Navigation System, Climate Control System, Power Accessories (Windows, Locks, Mirrors, Seats), Vehicle Electrical Troubleshooting, Wiring Diagrams Body: Body Panels, Doors, Hood, Trunk, Interior Trim, Exterior Trim, Safety Systems (Airbags, Seatbelts) Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks and Replenishments, Brake Pad/Rotor Replacement, Spark Plug Replacement, Belt Replacement Repair: Engine Rebuilds, Transmission Overhauls, Suspension Component Replacement, Brake System Repairs, Electrical Component Diagnosis and Replacement, Body Panel Repair and Replacement, Interior Component Repair Troubleshooting: Diagnostic Trouble Codes (DTCs), Symptom-Based Troubleshooting, Component Testing Procedures, Electrical Circuit Diagnosis Specifications: Torque Specifications, Clearances, Tolerances, Fluid Capacities, Part Numbers for common components Technical Depth Depth: Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed electrical system diagnostics and body repair procedures. 📊 Manual Specifications File Format File Format: PDF Software Requirement: Adobe Reader (free download) Printability: Printable (single pages, chapters, or entire manual) Searchability: Likely text-searchable due to PDF format. Device Compatibility: PC, MAC, Tablets, Smartphones ⚙️ Engine Specifications Primary Engine A6 Engine Options: 2.4L V6 (165-170 hp), 2.7L V6 (177-180 hp), 2.8L V6 (190-204 hp), 4.2L V8 (300 hp) S6 Engine: 4.2L V8 (300 hp) Rs6 Engine: 4.2L V8 Bi-Turbo (450 hp) Performance Rs6 0 60 Mph: Approximately 4.6 seconds (depending on specific model year and transmission). Fuel System Fuel Delivery: Electronic Fuel Injection (EFI), Multi-Point Fuel Injection (MPI) for naturally aspirated engines, Sequential Multi-Point Fuel Injection (SFI) for twin-turbo engines. Fuel Type: Premium Unleaded Gasoline (91 octane or higher recommended). Technical Details Engine Code Examples: AFC (2.4 V6), ACK (2.8 V6), BBK (4.2 V8), BCY (4.2 V8 Bi-Turbo) 🔧 Transmission Standard A6 Transmission Standard: 5-speed Manual (e.g., 01A), 5-speed Automatic (e.g., 01V) Optional A6 Transmission Optional: 6-speed Manual (certain variants), Tiptronic Automatic Transmission S6 Transmission: 5-speed Tiptronic Automatic Transmission Rs6 Transmission: 5-speed Tiptronic Automatic Transmission (e.g., 01X) Features Quattro AWD: Standard on most models, especially S6 and RS6. Provides permanent all-wheel drive for enhanced traction and handling. Often uses a Torsen center differential. 📐 Dimensions Exterior Wheelbase: Approximately 110.7 inches (2812 mm) Length: Approximately 193.4 inches (4912 mm) Width: Approximately 71.7 inches (1821 mm) Height: Approximately 57.2 inches (1453 mm) Weights Curb Weight Range: Approximately 3500 - 4200 lbs (1588 - 1905 kg), varying significantly by engine and trim. 🛡️ Safety Features Ratings NHTSA Front Impact: Generally rated well for its era, often 4-star or 5-star for driver and passenger frontal impact. IIHS Side Impact: Good or Acceptable, depending on specific model year and equipment. Active Features ABS: Standard Anti-lock Braking System. Esp: Electronic Stability Program (also known as ESP or DSC) available, particularly on higher trims and later years. Passive Features Airbags: Front driver and passenger airbags standard. Side airbags and head curtain airbags often optional or standard on higher trims. Seatbelts: Pretensioning front seatbelts with load limiters. 💡 Technology Features Infotainment Audio System: Available with premium Bose sound systems, CD players, and cassette decks. Navigation systems were optional and advanced for their time. Driver Assistance Cruise Control: Standard cruise control. Adaptive cruise control (ACC) was not widely available on this generation. Connectivity Phone Integration: Optional Bluetooth hands-free kits or car phone integration were available on later models. 🔧 Maintenance Service Intervals Oil Change Interval: Typically every 5,000 to 10,000 miles or 12 months, depending on driving conditions and oil type used. Consult specific model year recommendations. Timing Belt Replacement: For V6 engines, typically around 75,000-105,000 miles or 5-7 years. V8 engines typically use timing chains which are generally maintenance-free unless issues arise. Fluid Specifications Engine Oil Type: API SL or SM, SAE 0W-40, 5W-40, or...