Positioning:
Premium compact executive sedan, targeting discerning drivers valuing performance, technology, and build quality.
Competitors:
BMW 3 Series, Mercedes-Benz C-Class, Lexus IS, Infiniti G35
Platform:
MLB platform (longitudinal engine mounting)
Drivetrain:
Standard quattro all-wheel-drive system for enhanced traction and stability.
Design:
Sleek, modern styling with Audi's signature grille and LED daytime running lights (optional).
Interior:
High-quality materials, driver-focused cockpit, advanced MMI infotainment system.
Engine Mechanical:
Engine assembly, cylinder head, pistons, crankshaft, camshafts, timing system, lubrication system, cooling system
Engine Management:
Fuel injection, ignition system, emission control, sensors, actuators, ECU diagnostics
Drivetrain:
Transmission (manual and automatic), clutch, driveshafts, differential, axles
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, wheel bearings
Steering:
Steering rack, power steering system, steering column, alignment
Brakes:
Brake system components (discs, pads, calipers), hydraulic system, ABS, parking brake
Electrical System:
Battery, alternator, starter motor, lighting, fuses, relays, wiring diagrams
HVAC:
Heating, ventilation, and air conditioning system components and operation
Body And Chassis:
Body panels, doors, glass, interior trim, chassis components
Wheels And Tires:
Wheel specifications, tire sizes, mounting, balancing
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks, inspections
Repair:
Component replacement, system overhauls, minor and major repairs
Diagnostics:
Troubleshooting guides, fault code interpretation, diagnostic procedures
Special Tools:
Identification of necessary specialized tools for specific procedures
Torque Specifications:
Detailed torque values for all fasteners and critical components
Depth:
Comprehensive OE-level information, suitable for professional technicians and advanced DIYers
Engine Code Common:
BWT (2.0 TFSI), ALT (1.8 TFSI - less common for Quattro in this year), AXX/BPJ (2.0 TFSI - some markets)
Engine Displacement Primary:
2.0 Liters (1984 cc)
Engine Type:
Inline 4-cylinder, turbocharged, FSI (Fuel Stratified Injection)
Horsepower Primary:
200 hp @ 5100-6000 rpm (for 2.0 TFSI)
Torque Primary:
207 lb-ft (280 Nm) @ 1800-5000 rpm (for 2.0 TFSI)
Fuel Delivery:
Direct Injection (TFSI)
Fuel Type:
Premium Unleaded Gasoline (91 AKI or higher recommended)
Valve Train:
DOHC, 4 valves per cylinder, with variable valve timing (VVT)
Turbocharger:
Turbocharged with intercooler
Transmission Type Standard:
6-speed Manual Transmission
Transmission Type Optional:
6-speed Tiptronic Automatic Transmission with quattro all-wheel drive
AWD System:
Torsen center differential with asymmetric torque sensing for quattro
Length:
Approx. 178.5 inches (4534 mm)
Width:
Approx. 70.2 inches (1783 mm)
Height:
Approx. 55.1 inches (1399 mm)
Wheelbase:
Approx. 105.7 inches (2685 mm)
Curb Weight Approx:
3500 - 3700 lbs (1588 - 1678 kg) depending on transmission and options
NHTSA Front Impact:
5-Star (Driver and Passenger) (For models with side airbags)
IIHS Rollover:
Good (Good rating for all major crash tests)
ABS:
Standard Anti-lock Braking System (ABS)
Esp:
Standard Electronic Stability Program (ESP) with Traction Control
Airbags:
Front airbags, front side airbags, available side curtain airbags
Seatbelts:
Three-point front and rear seat belts with pretensioners
Mmi System:
Multi Media Interface (MMI) system for control of audio, climate, and vehicle settings. Base models may have a simpler radio.
Audio Options:
Bose premium audio system available on higher trims.
Headlights:
Xenon headlights with LED daytime running lights available.
Parking Sensors:
Front and rear parking sensors available.
Bluetooth:
Bluetooth connectivity for hands-free calling available on some models/trims.
Oil Change Interval:
Typically every 10,000 miles or 1 year, whichever comes first (flexible service system, refer to manual for specific conditions)
Timing Belt Chain:
Timing chain (on 2.0 TFSI), generally designed for the life of the engine; inspect for wear/noise. Some earlier 1.8T engines used belts.
Brake Fluid Change:
Every 2 years, regardless of mileage.
Coolant Change:
Audi G12++ or G13 coolant, typically every 4-5 years or 50,000 miles, but consult manual.
Engine Oil Spec:
SAE 5W-40 Synthetic (API SN, ACEA A3/B4, VW 502 00/505 00 approved) - check specific manual for exact spec.
Transmission Fluid Manual:
G 052 171 A2 (or equivalent API GL-4 75W-80/75W-90)
Transmission Fluid Automatic:
G 055 005 A2 (or equivalent ATF for 6-speed tiptronic)
Power Steering Fluid:
Pentosin CHF 11S or equivalent hydraulic fluid.
Coil Packs:
Ignition coil failure can lead to misfires and rough running. Common across many VW/Audi models.
Pcv Valve:
Positive Crankcase Ventilation (PCV) valve issues can cause oil leaks and vacuum leaks.
Thermostat:
Thermostat housing or valve can fail, leading to improper engine temperature regulation.
Carbon Buildup:
Direct injection engines can experience carbon buildup on intake valves, requiring periodic cleaning (e.g., walnut blasting).
Oil Leaks:
Leaking valve cover gaskets or oil pan gaskets can occur with age.
Heritage Summary:
Audi, a German automobile manufacturer, has a long history dating back to 1899, known for its engineering prowess, sophisticated design, and pioneering quattro all-wheel-drive technology.
A4 Evolution:
The 2006 A4 is part of the B7 generation, introduced in late 2004/early 2005 as an update to the B6. It featured revised styling, improved interior, and updated powertrains.
Manufacturing Locations:
Ingolstadt, Germany; Brussels, Belgium
Wards Auto World 10 Best:
Previous Audi models have been recognized by WardsAuto 10 Best Engines, highlighting the quality of their powertrains.
Consumer Reports Reliability:
Reliability ratings for the 2006 model year can vary; check specific reports for average consumer satisfaction.
