Segment:
        
        
            Executive Luxury Sedan/Wagon
        
     
    
        
            Brand Perception:
        
        
            Audi's A6, S6, and RS6 represent a blend of luxury, performance, and advanced technology, targeting discerning buyers.
        
     
    
    
        
            Competitors 2006:
        
        
            BMW 5 Series (E60), Mercedes-Benz E-Class (W211), Lexus GS, Jaguar S-Type.
        
     
    
    
        
            Platform:
        
        
            Volkswagen Group MLB platform (Modular Longitudinal Matrix)
        
     
    
        
            Drivetrain:
        
        
            Standard Quattro all-wheel drive across most variants, enhancing traction and handling.
        
     
 
    
    
    
        
            Engine Mechanical:
        
        
            Complete engine teardown, assembly, diagnostics, and overhaul procedures for all available engine variants.
        
     
    
        
            Transmission:
        
        
            Service and repair for automatic (e.g., Tiptronic) and manual transmissions, including clutch service, torque converter, and transmission control module diagnostics.
        
     
    
        
            Driveline Axle:
        
        
            Front and rear axle components, differential service, CV joints, driveshafts, and Quattro all-wheel-drive system maintenance.
        
     
    
        
            Brakes:
        
        
            Hydraulic system diagnostics, brake pad and rotor replacement, caliper service, ABS system troubleshooting, and parking brake adjustments.
        
     
    
        
            Steering:
        
        
            Power steering system service, steering rack repair, tie rod end replacement, and alignment procedures.
        
     
    
        
            Suspension:
        
        
            Front and rear suspension components, shock absorber/strut replacement, spring replacement, control arm service, and air suspension system (if equipped) diagnostics.
        
     
    
        
            Electrical:
        
        
            Comprehensive coverage of the vehicle's electrical system, including battery, charging system, starter, fuses, relays, and diagnostic procedures for various modules.
        
     
    
        
            Lights:
        
        
            Exterior and interior lighting system diagnostics, bulb replacement, headlight aiming, and Xenon/LED lighting system service.
        
     
    
        
            Restraints:
        
        
            Airbag system diagnostics, seat belt service, and SRS module troubleshooting.
        
     
    
        
            Body Frame:
        
        
            Body panel removal and installation, chassis repair, door and window mechanisms, sunroof service, and collision repair guidelines.
        
     
    
        
            Interior Exterior:
        
        
            Interior trim panel removal, seat adjustment and removal, dashboard components, exterior trim, and weatherstripping.
        
     
    
        
            HVAC:
        
        
            Air conditioning system service, heater core replacement, climate control module diagnostics, and refrigerant handling.
        
     
    
        
            Audio Visual Telematics:
        
        
            Infotainment system service, navigation system troubleshooting, speaker replacement, and telematics module diagnostics.
        
     
    
        
            Accessories Equipment:
        
        
            Service and installation of optional accessories and factory-installed equipment.
        
     
    
        
            Tires Wheels:
        
        
            Tire pressure monitoring system (TPMS) service, wheel bearing replacement, and lug bolt torque specifications.
        
     
    
        
            Wiring Diagrams:
        
        
            Comprehensive electrical wiring diagrams for all vehicle systems, facilitating detailed troubleshooting.
        
     
    
    
        
            Maintenance Procedures:
        
        
            Routine maintenance tasks such as oil changes, filter replacements, spark plug changes, coolant flushes, and brake fluid changes.
        
     
    
        
            Troubleshooting Diagnostics:
        
        
            Step-by-step diagnostic procedures for identifying and resolving common and complex mechanical and electrical issues, including OBD-II code interpretations.
        
     
    
        
            Repair Rebuild:
        
        
            Detailed instructions for component removal, disassembly, repair, reassembly, and installation for nearly every system on the vehicle.
        
     
    
        
            Installation Replacement:
        
        
            Guidance for replacing worn or damaged parts, including torque specifications and alignment procedures.
        
     
    
    
        
            Depth:
        
        
            Factory-level technical data, including specifications, tolerances, and diagnostic routines required for professional repair.
        
     
 
    
    
    
        
            Displacement A6 3.2:
        
        
            3.2L (3197 cc)
        
     
    
        
            Configuration A6 3.2:
        
        
            V6, FSI (Fuel Stratified Injection)
        
     
    
        
            Horsepower A6 3.2:
        
        
            255 hp (190 kW) @ 6500 rpm
        
     
    
        
            Torque A6 3.2:
        
        
            243 lb-ft (330 Nm) @ 3250 rpm
        
     
    
    
        
            Displacement S6:
        
        
            5.2L (5204 cc)
        
     
    
        
            Configuration S6:
        
        
            V10, FSI
        
     
    
        
            Horsepower S6:
        
        
            435 hp (324 kW) @ 6800 rpm
        
     
    
        
            Torque S6:
        
        
            398 lb-ft (540 Nm) @ 3000 rpm
        
     
    
    
        
            Displacement Rs6:
        
        
            4.2L (4163 cc)
        
     
    
        
            Configuration Rs6:
        
        
            V8, Bi-Turbocharged (Twin-Turbo)
        
     
    
        
            Horsepower Rs6:
        
        
            450 hp (336 kW) @ 5700-6800 rpm
        
     
    
        
            Torque Rs6:
        
        
            443 lb-ft (600 Nm) @ 1950-5150 rpm
        
     
    
    
        
            Fuel Delivery:
        
        
            Direct injection (FSI) for V6/V10, Multi-point fuel injection for V8 Twin-Turbo
        
     
    
        
            Fuel Type:
        
        
            Premium Unleaded Gasoline (91 Octane or higher recommended)
        
     
 
    
    
    
        
            Length Sedan:
        
        
            Approx. 4916 mm (193.5 in)
        
     
    
        
            Width Sedan:
        
        
            Approx. 1855 mm (73.0 in)
        
     
    
        
            Height Sedan:
        
        
            Approx. 1459 mm (57.4 in)
        
     
    
    
        
            Length Avant:
        
        
            Approx. 4925 mm (193.9 in)
        
     
    
    
        
            Height Allroad Adjustable:
        
        
            Adjustable via air suspension, typically higher than sedan/avant.
        
     
    
    
        
            Curb Weight Start:
        
        
            Starting around 1700 kg (3748 lbs) for A6 3.2 FWD.
        
     
    
        
            Curb Weight End:
        
        
            Up to 2000+ kg (4400+ lbs) for S6/RS6 models.
        
     
 
    
    
    
        
            NHTSA Front Crash:
        
        
            Likely 5-star rating (based on general platform performance for the era).
        
     
    
        
            IIHS Side Impact:
        
        
            Likely Good rating (based on general platform performance for the era).
        
     
    
    
        
            ABS:
        
        
            Anti-lock Braking System standard.
        
     
    
        
            Esp:
        
        
            Electronic Stability Program (ESP) standard.
        
     
    
        
            Quattro:
        
        
            All-wheel drive system enhancing stability and traction.
        
     
    
    
        
            Airbags:
        
        
            Frontal, side-impact, and curtain airbags standard across models.
        
     
    
        
            Seatbelts:
        
        
            3-point inertia-reel seatbelts with pretensioners.
        
     
 
    
    
    
        
            Infotainment System:
        
        
            Multi Media Interface (MMI) with navigation, radio, CD changer, and optional Bluetooth.
        
     
    
    
        
            Parking Sensors:
        
        
            Optional front and rear parking assist sensors (Audi parking system).
        
     
    
        
            Adaptive Cruise Control:
        
        
            Optional Adaptive Cruise Control (ACC).
        
     
    
        
            Tire Pressure Monitoring:
        
        
            Standard or optional Tire Pressure Monitoring System (TPMS).
        
     
    
    
        
            Bluetooth Integration:
        
        
            Optional Bluetooth hands-free calling.
        
     
    
    
        
            Headlights:
        
        
            Standard Xenon headlights with LED daytime running lights on some models.
        
     
 
    
    
    
        
            Oil Change Interval Gasoline:
        
        
            10,000 miles or 12 months, whichever comes first (LongLife Service, requires specific synthetic oil).
        
     
    
        
            Oil Change Interval Diesel:
        
        
            N/A for 2006 US models, but generally similar or extended intervals with specific diesel oils.
        
     
    
        
        Service Intervals Filters
    
 
    
        
            Air Filter Replacement:
        
        
            Every 20,000 - 30,000 miles, or as per manual/inspection.
        
     
    
        
            Cabin Filter Replacement:
        
        
            Every 15,000 - 20,000 miles.
        
     
    
    
        
            Brake Fluid Flush:
        
        
            Every 2 years, regardless of mileage.
        
     
    
        
        Service Intervals Spark Plugs
    
 
    
        
            Spark Plug Replacement Fsi:
        
        
            100,000 miles (or consult manual for exact interval based on engine code).
        
     
    
    
        
            Engine Oil Specification:
        
        
            API SN, ACEA A3/B4, VW 502.00 / 503.01 / 504.00 (e.g., Castrol EDGE Professional OE 5W-30, Mobil 1 ESP Formula 5W-30).
        
     
    
        
            Coolant Specification:
        
        
            G12 Plus Plus (G12++), VW TL 774 G (Purple color).
        
     
    
        
            Power Steering Fluid:
        
        
            Pentosin CHF 11 S or equivalent (Green color).
        
     
    
    
        
            Pcv Valve Failure:
        
        
            Cracked or failed PCV valves leading to rough idle, oil leaks, or check engine lights.
        
     
    
        
            Coil Pack Failure:
        
        
            Ignition coil failures causing misfires and rough running.
        
     
    
        
            Water Pump Leaks:
        
        
            Leaking water pumps, especially the auxiliary electric pump on some models.
        
     
    
        
            Air Suspension Failures:
        
        
            For Allroad models, potential leaks or failures in the air suspension system.
        
     
    
        
            Mmi Issues:
        
        
            Infotainment system (MMI) glitches or failures, often requiring software updates or module replacement.
        
     
 
    
    
    
        
            Audi Legacy:
        
        
            Audi boasts a long history of innovation, particularly in Quattro all-wheel drive technology and premium automotive engineering.
        
     
    
    
        
            Generation Transition:
        
        
            The 2006 model year marks the introduction of the C6 generation (4F chassis) for the A6, replacing the C5 (4B) generation. This was a significant redesign featuring new styling, technology, and platforms.
        
     
    
    
        
            Performance Variant Introduction:
        
        
            The S6 gained a powerful V10 engine for this generation, a departure from the V8 in the previous generation. The RS6 continued its legacy as the pinnacle performance model.
        
     
    
    
        
            Manufacturing Location:
        
        
            Primarily Neckarsulm, Germany.