Segment:
Compact Family Car
Competitors:
Volkswagen Golf, Ford Focus, Opel Astra, Renault Mégane, Peugeot 307.
Design Philosophy:
Futuristic and distinctive styling, comfortable ride, focus on occupant safety and innovative features.
Manual Advantage:
Designed to empower owners and independent workshops with dealership-level technical information, reducing reliance on expensive official service centers.
Engine Mechanical:
Complete overhaul, component inspection, timing belt/chain service, lubrication system, cooling system, fuel delivery, exhaust system.
Engine Electrical:
Ignition system, fuel injection system (ECU diagnosis, sensor operation), starter, alternator, battery, wiring diagrams.
Transmission:
Manual gearbox (gearbox overhaul, clutch replacement, shift mechanism), Automatic gearbox (if applicable to this engine variant, fluid changes, torque converter).
Chassis Suspension:
Front suspension (struts, wishbones, ball joints), Rear suspension (torsion beams, shock absorbers), steering system (rack and pinion, power steering).
Brakes:
Front and rear brake systems (discs, pads, calipers, hydraulic lines, ABS system, parking brake).
Bodywork:
Body panel repair and replacement, door mechanisms, glass, seals, interior trim, exterior lighting.
Electrical Body:
Lighting systems (headlights, taillights, interior lights), power windows, central locking, wipers, horn, dashboard instrumentation, climate control system.
Diagnostics Troubleshooting:
Fault code interpretation (OBD-II), symptom-based troubleshooting guides for common issues.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and top-ups, brake fluid flush.
Repair:
Component replacement (e.g., alternator, starter motor, radiator, CV joints), engine rebuild procedures, transmission repair, brake caliper rebuild.
Installation:
Installation of common replacement parts, accessory fitting (e.g., tow bars, audio systems).
Diagnostics:
Testing of sensors, actuators, and control modules. Use of diagnostic tools and equipment.
Depth:
Comprehensive, covering basic maintenance to advanced diagnostics and component-level repairs. Includes torque specifications, clearances, and electrical schematics.
Engine Code:
NFU (TU5JP4)
Engine Type:
Inline 4-cylinder, naturally aspirated petrol
Bore X Stroke:
78.5 mm x 82.0 mm
Compression Ratio:
10.8:1
Horsepower:
110 PS (108 hp; 81 kW) @ 6000 rpm
Torque:
147 Nm (108 lb-ft) @ 4000 rpm
Fuel Delivery:
Multi-point fuel injection (MPi)
Fuel Type:
Unleaded petrol (95 RON recommended)
Emission Control:
Catalytic converter, EURO 4 compliant
Type:
5-speed Manual (MA5)
Type:
4-speed Automatic (AL4)
Clutch:
Hydraulically actuated, dry single plate
Gear Ratios Manual:
Refer to manual for specific ratios (e.g., 1st: 3.45, 2nd: 1.94, 3rd: 1.28, 4th: 0.97, 5th: 0.76, Reverse: 3.33)
Transmission Fluid Manual:
Refer to manual for specific type and capacity (typically gear oil GL-4 or GL-5 specification)
Transmission Fluid Automatic:
Refer to manual for specific type and capacity (e.g., Esso LT 71141 or equivalent)
Euro Ncap Score:
5 Stars (for early models, specific score depends on exact configuration)
Esp Asr:
Available on higher trims or as an option
Airbags:
Driver, front passenger, side airbags, curtain airbags (depending on trim level).
Seatbelts:
Pre-tensioning seatbelts with force limiters
Child Seat Anchors:
ISOFIX mounting points
Audio System:
RDS radio with CD player, steering wheel mounted audio controls, optional JBL sound system.
Display:
Central digital display for audio, climate, and trip computer information.
Parking Sensors:
Optional rear parking sensors
Bluetooth:
Optional, often integrated into the audio system for hands-free calling.
Oil Change Interval:
Typically every 15,000 km (9,300 miles) or 1 year, whichever comes first (refer to manual for exact recommendation based on driving conditions).
Timing Belt Interval:
Typically every 120,000 km (75,000 miles) or 5 years, including tensioner and idler pulleys (critical to follow).
Engine Oil:
Refer to manual for specific viscosity grade (e.g., 5W-30 or 0W-30) and PSA approval (e.g., PSA B71 2290 or equivalent low SAPS oil).
Coolant:
Antifreeze/coolant with extended life (e.g., PSA approved blue or purple coolant, typically a 50/50 mix with distilled water).
Ignition Coils:
Can be prone to failure, leading to misfires and rough running.
Rear Suspension Bearings:
Can wear, causing knocking noises over bumps, particularly on torsion beam models.
Air Conditioning System:
Leaks in the evaporator or condenser can lead to loss of refrigerant.
Electronics:
Intermittent faults with various electronic control units (ECUs) or sensors can occur.
Citroen Philosophy:
Known for innovation, comfort (Hydractive suspension in higher-end models), and distinctive styling, dating back to André Citroën's early automotive ventures.
C4 Introduction:
Launched in 2004 as the successor to the Citroën Xsara, the C4 marked a significant step forward in design and technology for Citroën's compact hatchback segment.
Manufacturing Locations:
Primarily produced at the PSA Peugeot Citroën plant in Mulhouse, France, and also in El Palomar, Argentina, and Wuhan, China.
