🏷️ Basic Information

Make:

Citroën

Model:

C1

Year:

2005

Engine Variant:

1.0i MMT

Engine Code:

1KR-FE (Toyota Aygo/Peugeot 107 shared)

Chassis Code:

PM

👋 Introduction

Segment:

A-segment (City Car/Supermini)

Target Audience:

Urban dwellers, first-time car buyers, budget-conscious consumers seeking economical and compact transportation.

Key Competitors:

Toyota Aygo, Peugeot 107, Fiat Panda, Ford Ka, Hyundai i10, Kia Picanto.

Design Philosophy:

Compact, stylish, and affordable urban mobility solution, emphasizing fuel efficiency and maneuverability.

Mmt Transmission Highlight:

The MMT automated manual transmission offers the convenience of an automatic with the fuel economy of a manual, though it requires specific understanding for optimal operation and maintenance.

📋 Manual Details

Systems Covered:

Engine mechanical, Engine electrical, Fuel system, Cooling system, Exhaust system, Ignition system, Lubrication system, Transmission (MMT - MultiMode Automated Manual Transmission), Clutch, Brakes (hydraulic, ABS), Steering, Suspension (front & rear), HVAC system, Body electrical, Bodywork, Interior trim, Wiring diagrams, Diagnostics, Troubleshooting, Maintenance schedules.

Pages:

Approximately 1500+

Type:

Comprehensive Service and Repair Manual

Language:

English

Format:

Digital (PDF/eBook)

📖 Manual Coverage

Engine Mechanical:

Detailed overhaul procedures for cylinder head, block, crankshaft, pistons, connecting rods, camshafts, valve timing. Torque specifications, clearances, and component replacement procedures.

Engine Electrical:

ECU diagnosis, sensor testing (crankshaft position, camshaft position, oxygen sensors, MAP sensor), starter, alternator, ignition coils, wiring harness repair, diagnostic trouble codes (DTCs).

Fuel System:

Fuel pump operation, injector testing and replacement, fuel filter replacement, fuel pressure specifications, MMT system fuel control integration.

Transmission Mmt:

Detailed breakdown of the automated manual transmission, including clutch actuator, gear actuator, hydraulic system, control unit, shift logic, diagnostic procedures for MMT faults, fluid specifications and replacement.

Brakes:

Disc brake caliper overhaul, pad replacement, rotor specifications, hydraulic system bleeding, ABS system component testing, brake fluid type and bleeding sequence.

Suspension Steering:

Front and rear suspension component replacement (struts, springs, control arms, bushings), wheel alignment specifications, power steering system components (if applicable), steering column, tie rod ends.

HVAC:

Air conditioning system components, refrigerant type and charge, blower motor, heater core replacement, cabin filter replacement, diagnostic procedures for climate control issues.

Bodywork Interior:

Panel removal and installation, door mechanisms, window regulators, lighting system (headlights, taillights, interior), trim panel removal, seat adjustment and replacement.

Maintenance:

Scheduled maintenance intervals, oil change procedures, filter replacement (oil, air, cabin), spark plug replacement, fluid level checks and top-ups, brake inspection, tire rotation.

Troubleshooting:

Systematic diagnostic flowcharts for common drivability issues, starting problems, electrical faults, MMT system errors, brake system malfunctions, HVAC problems.

Repair Rebuild:

Step-by-step instructions for component removal, disassembly, inspection, repair, reassembly, and installation for major vehicle systems including engine, transmission, brakes, and suspension.

Diagnostics:

Guidance on using OBD-II scanners, interpreting diagnostic trouble codes (DTCs), live data stream analysis, component actuation tests, and sensor data interpretation for the 1.0i MMT powertrain.

Depth:

Comprehensive, covering routine maintenance to major component overhaul and complex electronic diagnostics. Suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

File Format:

PDF

Searchability:

Fully searchable text for quick access to specific information.

Quality:

High-resolution, clear diagrams, schematics, and photographs.

Binding:

N/A (Digital)

Paper:

N/A (Digital)

⚙️ Engine Specifications

Engine Type:

3-cylinder, 12-valve, DOHC, naturally aspirated petrol

Displacement:

998 cc (1.0 Litre)

Horsepower:

68 PS (67 bhp / 50 kW) @ 6000 rpm

Torque:

93 Nm (69 lb-ft) @ 3600 rpm

Fuel Delivery:

Electronic multi-point fuel injection

Fuel Type:

Unleaded Petrol (95 RON recommended)

Bore X Stroke:

71.0 mm x 84.0 mm

Compression Ratio:

10.8:1

🔧 Transmission

Type:

MMT (MultiMode Automated Manual Transmission)

Manual Option:

5-speed manual transmission

Mmt Operation:

Electrically controlled clutch and gear selection, offering automatic and sequential manual modes.

Mmt Fluid Type:

Specific MMT fluid (refer to manual for exact specification, often a dedicated ATF or specialized fluid)

📐 Dimensions

Length:

3435 mm

Width:

1630 mm

Height:

1470 mm

Wheelbase:

2340 mm

Kerb Weight:

approx. 805 kg

Gross Vehicle Weight:

approx. 1280 kg

Boot Capacity:

139 litres (expandable to 751 litres with rear seats folded)

🛡️ Safety Features

Euro Ncap Rating:

4 Stars (for related models from the same platform)

ABS:

Anti-lock Braking System (standard on most models)

Efd:

Electronic Brakeforce Distribution

Esp:

Electronic Stability Programme (optional or standard depending on market and trim)

Airbags:

Driver and passenger front airbags, optional side airbags.

Seatbelts:

3-point seatbelts with pretensioners (front), ISOFIX child seat anchor points.

💡 Technology Features

Audio System:

Basic AM/FM radio with CD player. Connectivity typically via AUX input. Optional steering wheel controls on higher trims.

Parking Sensors:

Optional rear parking sensors on some models.

Bluetooth:

Typically not standard; optional hands-free Bluetooth might be available on later or higher-spec models.

ECU:

Engine Control Unit managing fuel injection, ignition timing, and MMT system.

🔧 Maintenance

Oil Change Interval:

Every 15,000 km or 12 months, whichever comes first.

Air Filter Replacement:

Every 30,000 km or 24 months.

Spark Plug Replacement:

Every 60,000 km.

Brake Fluid Change:

Every 24 months.

Engine Oil Type:

API SL/SM, ACEA A3/B4, SAE 0W-20 or 5W-30 (Synthetic)

Engine Oil Capacity:

3.1 litres (with filter)

Coolant Type:

Ethylene glycol-based antifreeze (purple or pink, long-life, e.g., PSA B71 5100 or Toyota Super Long Life Coolant)

Brake Fluid Type:

DOT 4

Transmission Fluid Capacity:

Refer to MMT system manual for specific capacity and type.

Mmt Clutch Actuator:

Potential wear and tear on the clutch actuator, leading to hesitant shifting or error codes. Requires calibration and potentially replacement.

Starter Motor Failure:

Occasional issues with starter motor reliability on early models.

Rear Suspension Bushings:

Wear in rear axle bushings can lead to knocking noises and compromised handling.

Catalytic Converter:

Premature failure of the catalytic converter can occur due to various engine management issues.

📚 Vehicle History

Citroen Heritage:

Citroën, a French automotive manufacturer, has a long history of innovative and practical vehicles, particularly in the small car segment.

Platform Sharing:

The Citroën C1 is a result of a joint venture with Toyota, sharing its platform and many components with the Toyota Aygo and Peugeot 107. This collaboration aimed to reduce development costs and leverage Toyota's expertise in efficient manufacturing.

Manufacturing Location:

Kolín, Czech Republic (TPCA - Toyota Peugeot Citroën Automobile plant)

First Generation Production:

2005–2014 (This manual covers the initial phase of the first generation).

🏆 Awards & Recognition

Fuel Economy Awards:

The 1.0i engine is highly regarded for its exceptional fuel efficiency, often winning awards or praise in its segment for low running costs.

Reliability Perception:

Generally considered reliable due to Toyota's involvement in its mechanical components, though the MMT transmission can be a point of concern if not maintained.

Emissions Standards:

Compliant with Euro 4 emissions standards for its model year.