Positioning:
        
        
            The Citroën C3 is a stylish and practical subcompact car, known for its comfort and distinctive design, competing in the European B-segment against models like the Peugeot 207, Renault Clio, and Ford Fiesta.
        
     
    
    
        
            Competitors:
        
        
            Peugeot 207, Renault Clio III, Ford Fiesta Mk6, Opel Corsa C, Volkswagen Polo IV.
        
     
    
    
        
            Model Highlights:
        
        
            Unique 'C-Airwave' passenger airbag system (later models), comfortable suspension, spacious interior for its class, distinctive styling.
        
     
 
    
    
    
        
            Engine Mechanical:
        
        
            Engine disassembly, assembly, inspection, overhaul, timing belt, cylinder head, pistons, crankshaft, lubrication system, cooling system.
        
     
    
        
            Engine Management:
        
        
            Fuel injection system (Bosch Motronic), ignition system, emission control systems, sensors, actuators, diagnostic trouble codes (DTCs).
        
     
    
        
            Transmission:
        
        
            Manual transmission (ML5C), clutch system, gearbox disassembly and assembly, lubrication, driveshafts.
        
     
    
        
            Braking System:
        
        
            Front and rear brake system, hydraulic components, brake fluid, ABS (Anti-lock Braking System), brake pad replacement, disc replacement, caliper overhaul.
        
     
    
        
            Suspension Steering:
        
        
            Front and rear suspension, shock absorbers, springs, control arms, bushings, steering system, power steering, wheel alignment.
        
     
    
        
            Electrical System:
        
        
            Battery, charging system (alternator), starting system, lighting system, wipers, horn, fuses, relays, wiring diagrams.
        
     
    
        
            Body And Interior:
        
        
            Body panels, doors, hood, trunk, bumpers, seats, dashboard, trim panels, HVAC system, interior lighting.
        
     
    
        
            Heating Ventilation Air Conditioning:
        
        
            HVAC system components, refrigerant, operation, troubleshooting, cabin filter replacement.
        
     
    
    
        
            Maintenance:
        
        
            Routine maintenance, oil changes, filter replacements (oil, air, cabin, fuel), spark plug replacement, coolant checks and changes, brake fluid flush.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common faults, symptom-based troubleshooting guides, fault code interpretation.
        
     
    
        
            Repair:
        
        
            Step-by-step repair procedures for all major mechanical and electrical components, including detailed diagrams.
        
     
    
        
            Diagnostics:
        
        
            On-board diagnostics (OBD-II) system access and interpretation, sensor data analysis, electronic control unit (ECU) functions.
        
     
    
        
            Engine Overhaul:
        
        
            Detailed procedures for complete engine teardown, component inspection, machining, and reassembly.
        
     
    
        
            Transmission Rebuild:
        
        
            Step-by-step instructions for manual and automatic transmission disassembly, component replacement, and reassembly.
        
     
    
        
            Electrical Diagnostics:
        
        
            Comprehensive wiring diagrams, component testing procedures, and troubleshooting flowcharts for the entire electrical system.
        
     
    
    
        
            Depth:
        
        
            Comprehensive, covering everything from basic maintenance to complete engine and transmission overhauls, suitable for DIY enthusiasts and professional mechanics.
        
     
 
    
    
    
        
            Type:
        
        
            5-speed Manual (ML5C)
        
     
    
    
        
            Type:
        
        
            4-speed Automatic (AL4)
        
     
    
    
        
            Manual Gear Ratios:
        
        
            Specific gear ratios available in the manual (e.g., 1st: 3.45, 2nd: 1.94, 3rd: 1.37, 4th: 1.03, 5th: 0.81, Reverse: 3.09, Final Drive: 3.72)
        
     
    
    
        
            Manual Transmission Fluid:
        
        
            API GL-4, SAE 75W-80 (e.g., Total Transmission BV)
        
     
    
        
            Automatic Transmission Fluid:
        
        
            LT 71141 Specification (e.g., Mobil ATF LT 71141)
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 20,000 km (12,500 miles) or 2 years, whichever comes first.
        
     
    
        
            Timing Belt Replacement:
        
        
            Every 120,000 km (75,000 miles) or 10 years, whichever comes first.
        
     
    
        
            Spark Plug Replacement:
        
        
            Every 60,000 km (37,500 miles) or 4 years, depending on plug type.
        
     
    
    
        
            Engine Oil Specification:
        
        
            ACEA A3/B4 or A5/B5, viscosity SAE 0W-30 or 5W-30 (e.g., Total Quartz 9000).
        
     
    
        
            Coolant Specification:
        
        
            OAT (Organic Acid Technology) coolant, long-life, blue or purple color (e.g., Total Glacelf Auto Supra).
        
     
    
        
            Brake Fluid Specification:
        
        
            DOT 4
        
     
    
        
            Engine Oil Capacity:
        
        
            Approx. 3.4 liters (with filter change)
        
     
    
        
            Cooling System Capacity:
        
        
            Approx. 5.2 liters
        
     
    
        
            Manual Transmission Oil Capacity:
        
        
            Approx. 2.0 liters
        
     
    
    
        
            Common Problems:
        
        
            Potential for ignition coil failure, minor electrical gremlins, wear on suspension bushings, early ABS sensor issues, clutch master cylinder leaks.