Ignition system
* Spark plugs
* Ignition coil
* Ignition distributor or ignition control module
* Spark plug wires
Fuel supply system
* Fuel tank
* Fuel pump
* Fuel filter
* Fuel lines
* Fuel injectors
Engine management system
* Electronic engine control unit (ECU)
* Sensors (temperature, pressure, crankshaft and camshaft position)
* Actuators (injectors, variable valve timing system)
Charging system
* Generator
* Voltage regulator
* Rechargeable battery
Starting system
* Starter
* Ignition activator
*Start wires
Lighting system
* Headlights
* Tail lights
* Side lights
* Fog lights
* Direction indicators
Sound system
* Klaxon
* Horn switch
Security system
* Airbags
* Seat belts
* Anti-lock braking system (ABS)
* Stability control system (ESP)
Comfort and amenities
* Electric windows
* Electric seats
* Audio system
* Air conditioning or climate control
* Cruise control
Other
* Central locking
* Electric mirrors
*Rain sensor
* Rear view camera