Segment Placement:
Compact executive sedan, competing with BMW 3 Series, Mercedes-Benz C-Class, Audi A4
Design Philosophy:
Emphasized sporty handling, distinctive Italian styling, and powerful engine options
Performance Orientation:
Known for its spirited performance, especially with the 'Selespeed' automated manual transmission and performance engines
Italian Design:
Unique styling by Zagato for certain versions, and iconic Alfa Romeo grille
Owner Empowerment:
Enables owners to perform extensive maintenance and repairs, saving on labor costs
Engine Systems:
Engine mechanical, fuel injection, ignition, cooling, lubrication, exhaust
Drivetrain Systems:
Transmission (manual and automatic), clutch, driveshafts, differentials
Suspension Steering:
Front and rear suspension components, steering rack and pump, wheel alignment
Braking System:
Brake hydraulics, ABS system, brake pad/disc replacement, caliper service
Electrical Systems:
Wiring diagrams, battery, alternator, starter, lighting, fuses, relays, ECUs
Body Interior:
Body panels, doors, windows, seats, interior trim, climate control
Routine Maintenance:
Oil changes, filter replacements, spark plug service, fluid checks and top-offs
Repair Procedures:
Engine rebuild, transmission overhaul, suspension component replacement, brake system repair
Diagnostic Troubleshooting:
Step-by-step guides for identifying and resolving common faults
Component Removal Installation:
Detailed instructions for removing and refitting various vehicle components
Diagnostic Capability:
Advanced diagnostic procedures, including fault code interpretation (where applicable)
Rebuild Level:
Complete engine and transmission rebuild specifications
Torque Specifications:
Detailed torque values for critical fasteners across all systems
Wiring Diagrams:
Comprehensive and detailed electrical wiring schematics
PDF Quality:
High-resolution, searchable PDF for clarity and ease of use
Printability:
Printable pages for hands-on workshop use
Digital Format Benefit:
Instant download access, no physical binding required
Digital Content Advantage:
Easily navigable with hyperlinked table of contents and section links
Engine Variants Covered:
Twin Spark (2.0L I4), V6 Busso (3.0L V6), Turbo Diesel (1.9L I4)
2.0L Twin Spark Horsepower:
150 PS (148 bhp; 110 kW) at 6,300 rpm
2.0L Twin Spark Torque:
187 Nm (138 lb-ft) at 4,800 rpm
3.0L V6 Busso Horsepower:
210 PS (207 bhp; 154 kW) at 6,300 rpm
3.0L V6 Busso Torque:
260 Nm (192 lb-ft) at 5,000 rpm
Fuel Injection Type:
Bosch Motronic fuel injection system
Ignition System:
Distributorless Ignition System (DIS) for Twin Spark, Distributor for V6
Engine Control Unit ECU:
ECU identification and basic parameters covered
Standard Transmission Type:
5-speed manual transmission
Optional Transmission Type:
4-speed automatic transmission (e.g., ZF 4HP18), Selespeed automated manual
Clutch Type:
Hydraulically operated single dry plate clutch
Differential Type:
Open differential (some Q4 models featured viscous coupling)
Length:
Approx. 4400 mm (173.2 in)
Width:
Approx. 1700 mm (66.9 in)
Height:
Approx. 1420 mm (55.9 in)
Curb Weight:
Varies by engine and spec, approx. 1300-1500 kg (2866-3307 lb)
Gross Vehicle Weight Rating:
Varies by model, typically around 1800-2000 kg
Crash Test Performance:
Euro NCAP ratings not available for this era, but known for robust chassis construction
ABS:
Anti-lock Braking System (ABS) often standard or optional
Traction Control:
Traction control system (ASR) available on some models
Airbags:
Driver and passenger airbags available on later models
Seatbelts:
Pre-tensioning seatbelts
Oil Change Interval:
Typically every 10,000-15,000 km or 1 year, whichever comes first
Timing Belt Interval:
For Twin Spark: 60,000 km or 4 years (critical replacement item). V6: Timing chain (less frequent replacement)
Engine Oil Specification:
API SG/SH or ACEA A2-96, viscosity SAE 10W-40 or 15W-50 depending on climate
Coolant Specification:
Ethylene glycol-based antifreeze/coolant concentrate (e.g., Paraflu UP), mixed 50/50 with distilled water
Brake Fluid Specification:
DOT 3 or DOT 4 brake fluid
Transmission Fluid Manual:
GL-4 75W-90 or 80W-90 synthetic gear oil
Transmission Fluid Automatic:
ATF Dexron II/III or equivalent (refer to specific transmission)
Twin Spark Wear:
Timing belt tensioner failure, cam phasing issues on high-mileage engines, oil consumption
Busso V6 Maintenance:
Regular oil changes are crucial, exhaust manifold leaks on older V6s
Rust Prone Areas:
Wheel arches, sills, door bottoms, rear spring mounting points
Electrical Gremlins:
Corrosion on connectors, aging wiring harnesses leading to intermittent faults
Alfa Romeo Legacy:
Known for motorsport success and sporty driving characteristics
Successor To:
Alfa Romeo 75
Predecessor To:
Alfa Romeo 156
Manufacturing Plants:
Pomigliano d'Arco, Naples, Italy
Production Volume:
Over 250,000 units produced globally
European Car Of The Year:
Alfa Romeo 155 was not a winner, but competed in a segment with award-winning vehicles
Motorsport Success:
Highly successful in touring car championships (DTM, BTCC) with Gabriele Tarquini and other notable drivers
