🏷️ Basic Information Identification Make: Audi Model: RS6 Chassis Code: C5 Model Years Covered: 2002, 2003, 2004 Codes Engine Codes: BCY, BRN (4.2L V8 Bi-Turbo) 👋 Introduction Market Position Vehicle Segment: High-performance executive sedan/wagon (Supercar in disguise) Competitive Analysis Key Competitors: BMW M5 (E39), Mercedes-Benz E55 AMG (W211), Jaguar S-Type R Key Features Performance Focus: Legendary twin-turbo V8 power, quattro all-wheel drive, sport-tuned suspension and braking systems, exclusive RS styling. Manual Value Proposition Target Audience: Audi RS6 C5 owners, independent repair shops, performance enthusiasts 📋 Manual Details Coverage Areas Primary Focus: Service, Repair, Troubleshooting, Diagnostics Secondary Focus: Maintenance, Specifications, Wiring Diagrams Page Count Estimated Page Count: Over 1500 Manual Type Type: Workshop Service Repair Manual Language Language: English Format File Format: PDF 📖 Manual Coverage Systems Covered Powertrain: Engine Mechanical, Engine Electrical, Emission Control, Fuel System, Clutch System, Manual Transaxle System, Automatic Transaxle System, Driveshaft and Axle Chassis And Body: Suspension System, Steering System, Brake System, Restraint System (Airbags, Seatbelts), Body (Interior and Exterior), Body Electrical System, HVAC Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, inspections Repair Diagnostics: Step-by-step repair instructions, diagnostic procedures, troubleshooting guides, component testing Technical Depth Depth: Comprehensive: From basic maintenance to complete engine rebuilds and advanced electrical system diagnostics. 📊 Manual Specifications File Format Readability: Searchable PDF text Print Quality Printability: High-resolution, printable pages Binding Type Physical Format: Digital (PDF) Paper Type Digital Format Details: Optimized for screen viewing and printing specific sections. ⚙️ Engine Specifications Primary Engine Engine Type: 4.2L (4172cc) V8 Bi-Turbocharged Performance Horsepower: 450 PS (444 bhp; 331 kW) at 5700–6600 rpm Torque: 560 Nm (413 lb-ft) at 1950–5600 rpm Fuel System Fuel Delivery: Electronic fuel injection (Bosch Motronic ME7.1) Engine Internals Bore X Stroke: 84.5 mm x 93.0 mm Compression Ratio: 9.0:1 Cooling System Coolant Type: G12 Plus (or equivalent pink/red long-life coolant) Lubrication System Oil Capacity: Approx. 8.0 liters (8.5 US quarts) Recommended Oil: Fully synthetic 5W-40 (e.g., Castrol Edge Professional OE 5W-40) 🔧 Transmission Standard Type: 5-speed Tiptronic automatic (01E) Optional Type: 6-speed manual (available in some markets/later production) Features Drivetrain: Torsen Center Differential (Quattro AWD) Fluid Specs Automatic Transmission Fluid: G 052 162 A2 (or equivalent ATF meeting VW 501.62 specification) Fluid Capacity Automatic Transmission Fluid Capacity: Approx. 5.0 liters (service fill) Manual Transmission Fluid Fluid Type: G 052 145 A2 (or equivalent synthetic gear oil, e.g., 75W-90 GL-4/GL-5) 📐 Dimensions Exterior Length: 4,885 mm (192.3 in) Width: 1,818 mm (71.6 in) Height: 1,461 mm (57.5 in) Weights Curb Weight: Approx. 1,860 kg (4,100 lbs) Gross Vehicle Weight Rating: Approx. 2,340 kg (5,159 lbs) Cargo Trunk Volume Sedan: Approx. 565 liters (19.9 cu ft) Trunk Volume Avant: Approx. 455 liters (16.1 cu ft) with seats up, 1,570 liters (55.4 cu ft) with seats down 🛡️ Safety Features Ratings NHTSA Rating: Not specifically rated for this model year, but generally reflects strong structural integrity for its era. Active Features Braking System: Larger, performance-tuned disc brakes (e.g., 360mm front discs with 8-piston calipers on some models), ABS, EBD, ESP Passive Features Airbags: Front, side, and curtain airbags Seatbelts: Pretensioning front seatbelts 💡 Technology Features Infotainment Head Unit: Audi Chorus or Concert radio systems (with CD player), optional navigation system. Driver Assistance Stability Control: Electronic Stability Program (ESP) Traction Control: ASR (Anti-Slip Regulation) Connectivity Features: Optional Bose sound system, Bluetooth integration (later models/aftermarket). 🔧 Maintenance Service Intervals Oil Change Interval: Typically 10,000-15,000 miles or 12 months, whichever comes first (refer to manual for specific conditions). Spark Plug Replacement: Approx. 60,000 miles (refer to manual for specific plug type and gap) Timing Belt Replacement: This model uses a timing chain system, not a belt. Fluid Specifications Brake Fluid: DOT 4 (or specified Audi standard) Power Steering Fluid: G 002 000 (or Pentosin CHF 11S) Known Issues Common Wear Items: Coil packs, ignition modules, serpentine belts, PCV system components, catalytic converters, CV joints, automatic transmission torque converter. Performance Related: Turbocharger maintenance, intercooler system leaks, boost pressure issues. Electrical: Window regulator motors, HVAC blower motor resistor, ABS sensor failures. 📚 Vehicle History Brand Heritage Heritage Focus: Audi's long history of quattro all-wheel drive and performance engineering. Model Evolution Rs Line Introduction: The RS6 represents the pinnacle of the Audi A6 (C5) platform's performance iteration, following the RS2 Avant and S6 models. Production Production Period: 2002-2004 Manufacturing Location: Germany 🏆 Awards & Recognition Recognitions Performance Acclaim: Praised by automotive journalists for its immense power, all-weather capability, and relatively understated yet potent performance. Ratings General Reputation: Considered a 'super sedan' or 'sleeper' performance car of its era, offering supercar-like acceleration in a practical package.