The appearance of the engine compartment may differ depending on engine variant.
The ignition system has very high voltage and output. The voltage in the ignition system is highly dangerous. The car's electrical system must always be in key position 0 when work is being performed in the engine compartment; see Key positions - functions at different levels.
Do not touch the spark plugs or ignition coil when the car's electrical system is in key position II or when the engine is hot.