Vehicle Segment:
        
        
            Compact/Small Family Car
        
     
    
        
            Design Philosophy:
        
        
            Aerodynamic, innovative, and comfortable family car
        
     
    
    
        
            Key Competitors:
        
        
            Renault 12, Simca 1100, Ford Escort (European market)
        
     
    
    
        
            Distinctive Features:
        
        
            Hydropneumatic self-leveling suspension, distinctive 'fastback' styling, front-wheel drive, excellent interior space for its size
        
     
 
    
    
    
        
            Engine:
        
        
            Complete overhaul, diagnosis, repair, and tune-up procedures
        
     
    
        
            Transmission:
        
        
            Service, repair, and adjustment of all transmission variants
        
     
    
        
            Suspension:
        
        
            Detailed information on the innovative hydropneumatic suspension system, including components, servicing, and troubleshooting
        
     
    
        
            Brakes:
        
        
            Hydraulic system, brake discs, pads, fluid replacement, and bleeding procedures
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, component testing, ignition system, lighting, and accessories
        
     
    
        
            Bodywork:
        
        
            Panel repair, door mechanisms, glass replacement, and trim
        
     
    
        
            Cooling System:
        
        
            Radiator, fan, hoses, thermostat, and coolant specifications
        
     
    
        
            Fuel System:
        
        
            Carburetor (likely Solex or Zenith) overhaul and adjustment, fuel pump, and tank servicing
        
     
    
        
            Steering:
        
        
            Steering rack, linkages, and adjustment procedures
        
     
    
        
            HVAC:
        
        
            Heating system operation and basic maintenance (air conditioning less common for early models)
        
     
    
    
        
            Routine Maintenance:
        
        
            Periodic maintenance charts, oil changes, filter replacements, spark plug service, and lubrication schedules
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic procedures for common problems, fault finding guides
        
     
    
        
            Overhaul:
        
        
            Detailed step-by-step instructions for major component overhauls (e.g., engine, transmission, suspension)
        
     
    
        
            Repair Instructions:
        
        
            Step-by-step repair procedures for all major vehicle systems
        
     
    
        
            Wiring Diagrams:
        
        
            Comprehensive electrical wiring schematics
        
     
    
    
        
            Depth:
        
        
            Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds
        
     
 
    
    
    
        
            Engine Type:
        
        
            Air-cooled, horizontally opposed, 4-cylinder boxer engine
        
     
    
        
            Engine Displacement Early:
        
        
            1015 cc (GS)
        
     
    
        
            Engine Displacement Later:
        
        
            1124 cc (GS), 1220 cc (GSA)
        
     
    
    
        
            Horsepower Early:
        
        
            Approximately 56-60 hp DIN
        
     
    
        
            Horsepower Later:
        
        
            Approximately 60-70 hp DIN
        
     
    
        
            Torque Early:
        
        
            Approximately 82-85 Nm DIN
        
     
    
    
        
            Carburetion:
        
        
            Single or twin Solex/Zenith downdraft carburetors
        
     
    
    
        
            Cooling Method:
        
        
            Air-cooled
        
     
 
    
    
    
        
            Crash Test Era:
        
        
            Information from the 1970s and 1980s, generally less standardized than modern tests
        
     
    
    
        
            Active Safety:
        
        
            Disc brakes (front), drum brakes (rear), well-balanced chassis for its time
        
     
    
    
        
            Passive Safety:
        
        
            Integral body structure, padded dashboard, seatbelts
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Typically every 5,000-7,500 km or annually
        
     
    
        
            Filter Replacement Interval:
        
        
            Oil filter: With every oil change. Air filter: Every 15,000-20,000 km
        
     
    
        
            Spark Plug Replacement:
        
        
            Every 20,000-30,000 km, depending on type
        
     
    
    
        
            Engine Oil Type:
        
        
            SAE 20W-50 or 15W-40 (API SE/SF rating) – Refer to manual for specific viscosity grades for temperature ranges
        
     
    
        
            Engine Oil Capacity:
        
        
            Approx. 3.5 - 4.0 liters (including filter)
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 3 or DOT 4 (refer to manual for confirmation)
        
     
    
        
            Suspension Fluid Type:
        
        
            LHM (Liquide Hydraulique Minéral) – Citroen's proprietary mineral-based hydraulic fluid
        
     
    
        
            Transmission Fluid Type:
        
        
            GL-4 Gear Oil (e.g., SAE 75W-90 or 80W-90)
        
     
    
    
        
            Common Problems:
        
        
            Corrosion (especially wheel arches and sills), hydropneumatic suspension leaks or pressure loss, ignition system (coil, points, condenser), carburetor tuning issues, oil leaks from the air-cooled engine.
        
     
    
    
        
            Key Maintenance Points:
        
        
            Regular checking and topping up of suspension fluid (LHM), regular lubrication of suspension and steering components, diligent rust prevention, and timely ignition system maintenance.
        
     
 
    
    
    
        
            Manufacturer Origin:
        
        
            France
        
     
    
        
            Citroen Innovation:
        
        
            Known for pioneering hydropneumatic suspension (2CV, DS) and aerodynamic designs
        
     
    
    
        
            Gs Introduction:
        
        
            Launched in 1970 as a more conventional (compared to DS) but still innovative family car
        
     
    
        
            Gsa Introduction:
        
        
            Introduced in 1980 with updated styling (plastic bumpers, GSA grille), revised interior, and larger engine options
        
     
    
    
        
            Production Period:
        
        
            1970-1986
        
     
    
        
            Production Volume:
        
        
            Over 1.6 million units produced worldwide