Positioning:
The 1999 Audi A4 (B5 generation) was a significant model for Audi, aiming to compete in the premium compact executive segment against rivals like the BMW 3 Series and Mercedes-Benz C-Class, emphasizing quattro all-wheel drive and refined interiors.
Competitors:
BMW 3 Series (E36/E46), Mercedes-Benz C-Class (W202), Lexus ES, Infiniti I30.
Key Features Vehicle:
Available with front-wheel drive or legendary quattro all-wheel drive, a range of efficient four-cylinder and V6 engines, and a reputation for solid build quality and sophisticated design.
Key Features Manual:
Provides comprehensive diagnostic and repair information for DIY mechanics and professional technicians, enabling efficient troubleshooting and maintenance.
Engine Mechanical:
Engine removal/installation, internal engine components, cylinder head, engine block, pistons, crankshaft, camshafts, timing systems, lubrication, cooling system.
Fuel System:
Fuel injection systems (Bosch Motronic), fuel pumps, injectors, fuel pressure regulators, fuel lines, EVAP system.
Transmission Drivetrain:
Manual and automatic transmissions, clutch, driveshafts, differentials, CV joints, Quattro all-wheel-drive system.
Steering Suspension Brakes:
Steering rack, power steering pump, suspension components (struts, shocks, control arms), brake system hydraulics, calipers, rotors, ABS system.
Electrical System:
Wiring diagrams, fuse box layouts, starter, alternator, battery, lighting, instrument cluster, ECUs, sensors, immobilizer system.
Body Chassis:
Body panel removal/installation, door mechanisms, interior trim, bumpers, frame specifications, corrosion protection.
Exhaust Intake:
Exhaust manifold, catalytic converter, mufflers, intake manifold, air filter housing, throttle body.
Routine Maintenance:
Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs, belt inspections.
Repair Procedures:
Detailed step-by-step instructions for component removal, installation, and repair across all covered systems.
Troubleshooting:
Diagnostic procedures, common fault codes, symptom-based troubleshooting, electrical diagnostics.
Specifications Data:
Torque specifications, clearances, fluid capacities, electrical resistance values, diagnostic parameters.
Depth Of Coverage:
Comprehensive overhaul and repair procedures for most major mechanical, electrical, and body components.
Engine Codes Options:
1.8L Turbocharged I4 (AEB, APU, ARK, AWM), 2.8L V6 (ACK, AMX, AHA, ATQ).
1.8T Horsepower:
150 hp @ 5700 rpm (approx.)
1.8T Torque:
155 lb-ft @ 1950 rpm (approx.)
2.8L V6 Horsepower:
190 hp @ 6000 rpm (approx.)
2.8L V6 Torque:
207 lb-ft @ 3200 rpm (approx.)
Fuel Delivery:
Bosch Motronic electronic fuel injection (MPI)
Recommended Fuel:
Premium Unleaded (91 octane or higher recommended for optimal performance and efficiency)
Timing Belt Interval:
Recommended replacement every 60,000 - 90,000 miles or 5-7 years (crucial for 1.8T and V6 models to prevent catastrophic engine damage).
Standard Transmission:
5-speed Manual (01A for FWD/Quattro)
Optional Transmission:
5-speed Tiptronic Automatic (01V for Quattro, 01N for FWD)
Quattro AWD:
Torsen center differential in quattro models, providing variable torque split.
Manual Transmission Fluid:
G 052 911 A1/A2 (or equivalent GL-4 SAE 75W-90)
Automatic Transmission Fluid:
G 052 162 A2 (or ATF SP-III equivalent)
NHTSA Frontal Crash Test:
4/5 stars (driver), 4/5 stars (passenger) - Model Year 1999 (US)
ABS:
Standard Anti-lock Braking System
Traction Control:
Optional Electronic Stability Program (ESP) available on some models, particularly with quattro.
Airbags:
Driver and front passenger airbags standard. Optional side airbags.
Seatbelts:
Three-point inertia-reel seatbelts with pre-tensioners.
Oil Change Interval:
Recommended every 7,500 - 10,000 miles or 12 months, whichever comes first (depending on driving conditions and oil used). Refer to manual for specific guidance.
Engine Air Filter Replacement:
Every 15,000 - 30,000 miles or as per manual inspection.
Cabin Air Filter Replacement:
Every 15,000 - 30,000 miles or annually.
Spark Plug Replacement:
Iridium spark plugs typically last 60,000 - 100,000 miles. Check manual for specific type and interval.
Coolant Type:
G 12 / G 12+ (red colored, ethylene glycol based)
Engine Oil Capacity:
1.8T: approx. 4.4 quarts (4.2 liters); 2.8 V6: approx. 6.5 quarts (6.2 liters). Check manual for precise capacity.
Engine Oil Viscosity:
5W-40 or 0W-40 synthetic oil is generally recommended for optimal performance and protection, especially for the turbocharged engine. Refer to manual for specific ratings.
Common Problems 1.8T:
PCV valve failure, turbocharger oil leaks/failure, ignition coil issues, coolant flange leaks, sludge build-up from infrequent oil changes.
Common Problems 2.8V6:
Cam chain tensioner failures (can be catastrophic), coolant flange leaks, ignition coil issues, valve cover gasket leaks.
General Issues:
Window regulator failures, HVAC blower motor resistor failures, ABS sensor issues, CV joint wear (especially on quattro models), suspension component wear (control arms, tie rods).
Audi Heritage:
Audi has a long history of engineering excellence, particularly known for its quattro all-wheel-drive system, innovative designs, and a focus on premium quality and performance.
A4 B5 Generation:
The B5 generation (1995-2001 in Europe, 1996-2001 in North America) marked Audi's resurgence in the compact executive segment with a more modern platform and design language.
Production Period:
1994-2001 (global)
Manufacturing Location:
Ingolstadt, Germany; Brussels, Belgium; Puebla, Mexico
