Segment Competitors:
BMW 3 Series (E36), Mercedes-Benz C-Class (W202), Audi A4 (B5)
Design Philosophy:
Sporty handling, distinctive Italian styling, driver-focused cockpit
Differentiation:
More sporting focus, unique chassis dynamics, distinct aesthetics compared to German rivals.
Suspension Design:
Multi-link rear suspension (on many variants) and MacPherson strut front suspension contribute to renowned Alfa Romeo handling.
Engine Options:
Iconic Alfa Romeo Twin Spark and V6 engines, offering excellent performance and sound.
Q4 System:
Advanced permanent four-wheel-drive system on the Q4 model, providing exceptional traction and stability.
Powertrain:
Engine mechanicals, fuel system, ignition system, cooling system, exhaust system, lubrication system
Drivetrain:
Transmission (manual and automatic), clutch, differentials, drive shafts, Q4 all-wheel-drive system
Chassis:
Suspension (front and rear), steering system, brakes (front and rear), wheels and tires
Electrical:
Entire electrical system, lighting, instrumentation, starting and charging system, body electronics, diagnostic procedures, wiring diagrams
Body:
Body construction, exterior panels, interior trim, doors, windows, seats, HVAC system
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, inspections
Diagnostics:
Troubleshooting common problems, fault diagnosis for all major systems
Repair:
Detailed step-by-step repair procedures for all components, including complete disassembly and reassembly instructions
Electrical Service:
Wiring harness repair, component replacement, diagnostic tools
Level Of Detail:
Comprehensive, suitable for both DIY and professional mechanics
Illustrations:
Hundreds of photos, drawings, and diagrams
Guidance Features:
Step-by-step instructions, detailed substeps, notes, cautions, warnings, bold figure numbers
Engine Codes:
Twin Spark (e.g., 1.7, 1.8, 2.0), V6 Busso (e.g., 3.0)
Twin Spark Engines:
Inline-4 cylinder, DOHC, 2 spark plugs per cylinder for improved combustion efficiency.
V6 Busso Engines:
90-degree V6, DOHC, renowned for its charismatic sound and power delivery.
Typical Horsepower Range:
115 hp (1.7 TS) to 230 hp (3.0 V6 24V Q4)
Typical Torque Range:
150 Nm (1.7 TS) to 280 Nm (3.0 V6 24V Q4)
Injection Type:
Bosch Motronic electronic fuel injection (EFI)
Crash Test Performance:
Limited official Euro NCAP data for this specific period, but generally considered safe for its era. Manual will detail passive safety features.
Braking System:
Front ventilated discs, rear discs. ABS typically standard or optional.
Airbags:
Driver airbag standard, passenger airbag optional/standard on later models.
Body Structure:
Reinforced safety cage and crumple zones.
Audio System:
Factory fitted radio/cassette player, often with CD compatibility on later models. Manual covers system removal/installation.
ABS:
Anti-lock Braking System, functionality and troubleshooting detailed in the manual.
Lighting Controls:
Manual details operation and maintenance of headlights, taillights, interior lighting, and fog lamps.
Oil Change Interval:
Typically every 7,500-10,000 miles or annually, check manual for specific engine recommendations.
Timing Belt Replacement:
Crucial for Twin Spark engines, typically every 3-4 years or 30,000-50,000 miles. Manual provides precise intervals and procedure.
Engine Oil:
Refer to manual for specific viscosity (e.g., 10W-40, 15W-50) and API/ACEA specifications based on engine type.
Coolant:
Ethylene glycol-based antifreeze/coolant, typically a 50/50 mix with distilled water. Manual will specify type and capacity.
Brake Fluid:
DOT 4 or higher, as specified in manual.
Transmission Fluid:
Specific manual transmission fluid (MTF) and automatic transmission fluid (ATF) types as per manual.
Twin Spark Engine:
Timing belt tensioner wear, valve stem seals, oil consumption, distributor/coil pack issues.
Electrical System:
Wiring loom degradation, sensor failures, ECU issues.
Rust:
Common for cars of this era, particularly around wheel arches, sills, and subframes. Manual covers body repair procedures.
Alfa Romeo Legacy:
Renowned for sporting heritage, motorsport success, and distinctive Italian design.
Facelift Updates:
Facelifted model introduced around 1995 with revised exterior styling (e.g., grille, bumpers, lights) and interior updates.
Production Location:
Milan, Italy
Significance:
Marked Alfa Romeo's return to front-wheel drive in the executive segment after the Alfetta and Alfa 6.
Design Awards:
The 155, particularly early models, received critical acclaim for its styling.
Magazine Reviews:
Often praised by automotive journalists for its driving dynamics and spirited performance, especially with the V6 engine.
Manual Authenticity:
Official Alfa Romeo documentation, ensuring accuracy and adherence to factory standards.
