Lighting system
* Low and high beam headlights
* Side lights
* Brake lights
* Direction indicators
* Fog lights
Starting and charging system
* Battery
* Starter
* Generator
* Voltage regulator
Ignition system
* Spark plugs
* Ignition coil
* Ignition distributor (for older models)
* Ignition module (for modern models)
Power system
* Fuel tank
* Fuel pump
* Fuel filter
* Injectors
* Oxygen sensor
* Catalytic converter
Cooling system
* Radiator
* Thermostat
* Water pump
* Radiator fan
* Expansion tank
Lubrication system
* Engine crankcase
* Oil pan
* Oil pump
* Oil filter
Electronic system
* Electronic control unit (ECU)
* Sensors (eg crankshaft position sensor, air flow sensor)
* Actuators (e.g. injectors, throttle valve)
* Engine diagnostic and management system (OBD)
Assistance systems
* Heating and ventilation system
* Audio system
* Window lifters
* Electric seats
*Navigation system
* Parking assistance system
Security Components
*Alarm
* Stabilization system (ESP)
* Immobilizer
* Airbags