🏷️ Basic Information

Make:

Audi

Model:

A4 Quattro

Year:

1998

Chassis Code:

B5

👋 Introduction

Market Position:

The 1998 Audi A4 Quattro represented Audi's strong entry into the premium compact executive sedan segment, competing with rivals like the BMW 3 Series and Mercedes-Benz C-Class. It was known for its sophisticated Quattro all-wheel-drive system, refined interior, and comfortable ride.

Competitive Analysis:

The A4 Quattro offered a compelling blend of performance, luxury, and all-weather capability. Its Quattro system was a key differentiator against many competitors who offered rear-wheel drive or optional all-wheel drive. The design was understated yet elegant, appealing to buyers seeking a sophisticated alternative.

Key Features:

Standard Quattro all-wheel drive, refined 2.8L V6 engine option, upscale interior appointments, advanced safety features for its era, and a reputation for solid build quality.

📋 Manual Details

Coverage Areas:

Comprehensive service, repair, maintenance, and diagnostic information for the 1998 Audi A4 Quattro.

Page Count:

Not specified, but typically extensive for OE-derived software covering all repair aspects.

Manual Type:

Digital Service and Repair Manual Software

Language:

English

Format:

Online Software/Web-based access

Access Period:

One (1) year of access, with discounts available for additional years.

Content Source:

Licensed information derived from OE (Original Equipment) materials.

📖 Manual Coverage

Systems Covered:

Engine mechanicals (including timing belt, seals, gaskets), engine management & fuel system, ignition system, exhaust system, cooling system, lubrication system, Quattro all-wheel-drive system, transmission (manual and automatic), clutch, braking system (ABS included), steering system, suspension (front and rear), chassis components, electrical system (wiring diagrams, components, troubleshooting), HVAC system, body and interior trim, diagnostic trouble codes (DTCs) and troubleshooting procedures.

Procedures Included:

Routine maintenance, fluid changes, filter replacements, brake pad and rotor replacement, suspension component replacement (struts, control arms, ball joints), engine diagnostics and repair (including cylinder head removal, piston replacement), transmission overhaul and repair, clutch replacement, electrical system diagnosis and repair, HVAC system service, body panel removal and installation, audio system integration, safety system checks.

Technical Depth:

Factory-level depth, suitable for professional technicians and experienced DIY enthusiasts. Includes detailed step-by-step instructions, torque specifications, special tool requirements, diagnostic flowcharts, and wiring diagrams.

Diagnostic Coverage:

Detailed troubleshooting guides, diagnostic trouble codes (DTCs) with explanations and repair procedures, and diagnostic tool usage (e.g., VAG-COM scanner if applicable to the era).

Body And Trim Coverage:

Includes procedures for removing and installing bumpers, fenders, hoods, trunk lids, doors, windows, mirrors, and interior panels.

Electrical System Coverage:

Comprehensive wiring diagrams for all electrical systems, including lighting, power windows, power locks, instrument cluster, audio system, and engine control unit (ECU).

Troubleshooting Guides:

Includes flowcharts and step-by-step diagnostic procedures for common and uncommon issues, aiding in efficient problem identification.

📊 Manual Specifications

File Format:

Web-based access via browser (PC, laptop, smartphone, tablet compatible)

Print Quality:

N/A (Digital Format)

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

Device Compatibility:

Compatible with any PC, laptop, smartphone, or tablet with an internet connection and a web browser.

⚙️ Engine Specifications

Engine Option 1:

2.8L V6 DOHC 30-valve (AAH, ACK engines)

Horsepower 1:

172 hp @ 5800 rpm (AAH), 190 hp @ 6000 rpm (ACK)

Torque 1:

184 lb-ft @ 3200 rpm (AAH), 207 lb-ft @ 3200 rpm (ACK)

Fuel System 1:

Multi-point Fuel Injection (MPI)

Engine Code Notes:

The 1998 model year saw the introduction of the ACK engine which offered higher output compared to the earlier AAH engine.

Emission Control 1:

California Emissions (specific models) or Federal Emissions. Includes catalytic converter, secondary air injection system (on some engines).

Timing Drive 1:

Timing Belt

Engine Option 2:

1.8L Turbocharged Inline-4 DOHC (AEB engine)

Horsepower 2:

150 hp @ 5700 rpm

Torque 2:

155 lb-ft @ 1750-4600 rpm

Fuel System 2:

Electronic Fuel Injection (EFI)

Timing Drive 2:

Timing Belt

🔧 Transmission

Standard Transmission:

5-speed Manual (for most Quattro models)

Optional Transmission:

5-speed Tiptronic Automatic Transmission

Transmission Features:

The Quattro system utilizes a Torsen center differential for continuous torque distribution. Tiptronic allows manual gear selection.

Fluid Type Auto:

G 052 162 A1/A2 (ATF)

Fluid Type Manual:

G 052 145 A1/A2 (Gear Oil)

📐 Dimensions

Wheelbase:

103.2 inches (2621 mm)

Length:

178.4 inches (4531 mm)

Width:

68.3 inches (1735 mm)

Height:

55.7 inches (1415 mm)

Curb Weight Approx:

3300-3500 lbs (depending on configuration)

Trunk Capacity:

Approx. 16.0 cu ft

Wheelbase AWD:

2617 mm (103.0 inches)

Track Width Front:

1485 mm (58.5 inches)

Track Width Rear:

1474 mm (58.0 inches)

🛡️ Safety Features

NHTSA Frontal Impact:

Not directly rated by NHTSA in the modern sense, but generally considered a safe vehicle for its time.

Active Safety Features:

Anti-lock Braking System (ABS), standard Quattro all-wheel drive for enhanced traction.

Passive Safety Features:

Driver and front passenger airbags, side impact protection beams, three-point seatbelts with pretensioners.

Tire Pressure Front:

30-32 PSI (recommended, check vehicle sticker)

Tire Pressure Rear:

30-32 PSI (recommended, check vehicle sticker)

💡 Technology Features

Infotainment System:

Factory radio with cassette or CD player, optional Bose premium sound system. Limited digital integration by modern standards.

Driver Assistance Features:

ABS, standard Quattro AWD. Cruise control was a common option.

Connectivity Features:

No integrated Bluetooth or USB connectivity. Optional satellite navigation system available on some models.

🔧 Maintenance

Oil Change Interval:

Typically 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil type used. Consult specific manual recommendations.

Timing Belt Replacement:

Recommended every 60,000 to 75,000 miles or 5-7 years due to the risk of catastrophic engine damage if it fails.

Spark Plug Replacement:

Approx. 60,000 miles (based on platinum or iridium spark plugs).

Engine Oil Spec:

SAE 5W-40 or 5W-30 synthetic oil meeting VW 502 00 specification.

Coolant Spec:

G 12 (ethylene glycol-based coolant, pink color) or compatible equivalent.

Brake Fluid Spec:

DOT 4

Common Issues:

Ignition coil failure, mass airflow sensor (MAF) issues, crankcase ventilation system problems (PCV), coolant flange leaks, ABS sensor failures, window regulator failures, sagging headliner, CV axle wear.

Oil Filter Part Number Example:

Mann Filter W920/2 or equivalent

Air Filter Part Number Example:

Mann Filter C35189 or equivalent

Timing Belt Kit Part Number Example:

ContiTech TB244K1 (includes belt, tensioner, idlers)

Engine Oil Capacity 2.8L:

Approx. 7.2 US quarts (6.8 liters)

Engine Oil Capacity 1.8T:

Approx. 4.3 US quarts (4.1 liters)

Coolant Capacity:

Approx. 8.0 US quarts (7.5 liters)

Torque Specifications:

Detailed torque specifications for all critical fasteners, including engine components, suspension parts, and wheel lug bolts.

📚 Vehicle History

Brand Heritage:

Audi, a German automotive manufacturer, has a long history dating back to the early 20th century, known for its engineering prowess and innovation, particularly in quattro all-wheel drive technology.

Model Evolution:

The B5 generation Audi A4 (introduced in 1994 in Europe, 1995 in North America) replaced the Audi 80/90. The 1998 model year saw the introduction of the 2.8L V6 engine with 30 valves and an updated Tiptronic automatic transmission. The Quattro system remained a core offering.

Production Years:

1994-2001 (B5 generation)

Production Locations:

Ingolstadt and Neckarsulm, Germany.

🏆 Awards & Recognition

Car And Driver 10Best:

The Audi A4 (B5 platform) was named to Car and Driver's 10Best list for 1997.

Safety Rating Notes:

While not having modern crash test ratings, Audi vehicles of this era were generally well-regarded for their structural integrity and safety features.