🏷️ Basic Information

Make:

Alfa Romeo

Model:

155

Chassis Code:

Type 167

👋 Introduction

Market Position:

The Alfa Romeo 155 was a compact executive car produced during a period of transition for Alfa Romeo, aiming to blend sporty driving dynamics with practicality and premium appeal. It competed in a segment with strong rivals like the BMW 3 Series, Mercedes-Benz C-Class, and Audi A4.

Competitive Analysis:

The 155 offered a distinct Italian flair and a focus on driver engagement, often excelling in handling and engine responsiveness, particularly in its Sportwagon variants and the potent V6 models. It provided an alternative to the more conservatively styled German offerings.

Key Features:

The 155 is known for its distinctive styling, advanced suspension setups (including a multi-link rear on some versions), and a range of performance-oriented engines, including the renowned Busso V6. The availability of the Q4 all-wheel-drive system added to its performance credentials.

📋 Manual Details

Models Covered:

All models, engine variants, trim levels, and transmission types of the Alfa Romeo 155 produced from 1992 to 1998.

Page Count:

Estimated 1000+ pages (typical for a complete workshop manual of this era and scope, actual number not provided).

Manual Type:

Complete Workshop Service Repair Manual

Language:

English (implied by product description, common for international manuals).

Format:

Downloadable Digital Format (PDF, compatible with PC, Mac, tablets, smartphones).

📖 Manual Coverage

Systems Covered:

Engine mechanical, engine management (ECU diagnostics, fuel injection, ignition), cooling system, lubrication system, exhaust system, transmission (manual and automatic), drivetrain (front-wheel drive, Q4 all-wheel drive), brakes (hydraulic, ABS), suspension (front and rear), steering system, electrical system (wiring diagrams, lighting, accessories, starting and charging), body and chassis (bodywork repair, interior trim, glass), climate control, fuel system, safety systems (airbags, seatbelts).

Procedures Included:

Scheduled maintenance, routine servicing, troubleshooting guides, diagnostic procedures, detailed repair instructions for all major and minor components, component removal and installation, overhaul procedures, electrical system diagnostics, bodywork repair techniques, fluid and filter changes, replacement of wear items, torque specifications, special tool requirements.

Technical Depth:

Comprehensive, covering everything from basic maintenance tasks to in-depth component overhaul and advanced electrical system diagnostics. Suitable for both DIY enthusiasts and professional mechanics.

📊 Manual Specifications

File Format:

PDF (Portable Document Format), requiring Adobe Reader or compatible software.

Print Quality:

High-quality digital reproduction of original manufacturer documentation, designed for clarity and readability. Allows for printing of individual pages or entire sections.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine:

Twin Spark 16-valve (4-cylinder, DOHC) and V6 24-valve (6-cylinder, DOHC) engines. Specific displacements include 1.8L (1773cc), 2.0L (1995cc), and 2.5L (2492cc V6).

Performance:

Power outputs ranged from approximately 129 hp (1.8 Twin Spark) to 190 hp (2.5 V6) and up to 193 hp in later Twin Spark variants. Torque figures varied accordingly, emphasizing spirited acceleration and a sporting character.

Fuel System:

Bosch Motronic electronic fuel injection (EFI) system for all petrol engines. Diesel models also available with indirect injection.

🔧 Transmission

Standard Transmission:

5-speed manual transmission was standard on most variants.

Optional Transmission:

ZF 4-speed automatic transmission was an option on some models, particularly V6 variants.

Features:

The Q4 variants featured a sophisticated Viscodrive all-wheel-drive system with a Torsen center differential, providing enhanced traction and stability. Specific gear ratios and clutch types would vary by engine and transmission combination.

📐 Dimensions

Exterior Dimensions:

Sedan: Length: ~4400 mm, Width: ~1700 mm, Height: ~1420 mm. Wagon (Sportwagon): Length: ~4460 mm, Width: ~1700 mm, Height: ~1460 mm. Wheelbase: ~2580 mm. Exact dimensions varied slightly by specific model and year.

Interior Dimensions:

Seating for five. Interior space was competitive for its class, offering a driver-focused cockpit typical of Alfa Romeo. Specific headroom and legroom figures would vary by body style and seat adjustment.

Curb Weight:

Curb weight typically ranged from approximately 1250 kg to 1450 kg, depending on engine and transmission choice (e.g., V6 Q4 models were heavier).

🛡️ Safety Features

Safety Ratings:

Euro NCAP testing data for this specific model year range is limited, as standards evolved. However, it was equipped with standard safety features for its era.

Active Safety Features:

Anti-lock Braking System (ABS) was available on higher trims and as an option. Power-assisted steering for responsive handling. Front and rear ventilated disc brakes (Vented front discs standard on most performance variants).

Passive Safety Features:

Seatbelt pretensioners, energy-absorbing steering column, reinforced body structure. Frontal airbags were optional or standard on later models depending on market and trim.

💡 Technology Features

Infotainment System:

Factory-fitted audio systems typically included radio cassette players with AM/FM tuners, often with CD changer compatibility in later or higher-spec models. Speaker configurations varied by trim level.

Driver Assistance Features:

ABS was available. Traction control systems were not commonly fitted to this model. The focus was on chassis tuning and responsive steering for driver engagement.

Connectivity Options:

Limited by modern standards. Typically featured power windows, central locking, and optional air conditioning. Connectivity was primarily through the audio system.

🔧 Maintenance

Service Intervals:

Typical recommended intervals: Oil and filter change every 10,000-15,000 km or 12 months. Spark plugs (Twin Spark) every 40,000-60,000 km. Timing belt (critical on Twin Spark and V6 engines) every 60,000-90,000 km or 4-5 years. Brake fluid flush every 2 years. Coolant change every 2-4 years. Exact intervals are model and engine dependent and detailed in the manual.

Engine Oil Specification:

Recommended: API SG/SH or ACEA A2/A3, viscosity typically SAE 10W-40 or 5W-40 (check manual for specific engine variant). Capacity: ~4.5-5.5 liters.

Coolant Specification:

Ethylene glycol based coolant, typically a 50/50 mix with distilled water. Paraflu UP or equivalent is often specified by Alfa Romeo. Capacity: ~7-8 liters.

Transmission Fluid Manual:

API GL-4 or GL-5, viscosity SAE 75W-90 or 80W-90. Capacity: ~1.6-2.0 liters.

Transmission Fluid Automatic:

Dexron III/Mercon equivalent. Capacity: ~7-8 liters (for a complete fluid change, including torque converter).

Brake Fluid Specification:

DOT 3 or DOT 4. Capacity: ~1 liter for a full flush.

Known Issues:

Common issues reported include wear on the front suspension components (bushings, ball joints), potential oil leaks from engine seals (especially camshaft seals on Twin Spark), aging rubber hoses and components, corrosion on certain body areas (wheel arches, sills), and the need for regular timing belt maintenance is critical to prevent catastrophic engine damage. Electrical gremlins can occur with age on any vehicle of this period.

📚 Vehicle History

Brand Heritage:

Alfa Romeo boasts a long and storied history in motorsport and performance car manufacturing, known for its passionate engineering and distinctive Italian design. The brand's heritage is deeply intertwined with performance, innovation, and a unique driving experience.

Model Evolution:

The 155 replaced the Alfa Romeo 75 (Milano) and was produced from 1992 to 1998. It shared its platform with other Fiat Auto models, including the Fiat Tipo and Lancia Dedra. Key evolutions included the introduction of the Q4 all-wheel-drive system and various engine updates and styling revisions.

Production Years:

1992-1998

🏆 Awards & Recognition

Recognitions:

The Alfa Romeo 155 achieved significant success in motorsport, particularly in touring car championships (like the DTM and BTCC), where its chassis and engine capabilities were proven. While specific individual car awards are less common for this model compared to contemporary Italian icons, its racing pedigree is notable.