Where is the in the expansion bottle in a Renault megane?

In a Renault Megane, the expansion bottle is typically located near the front of the engine bay, on the driver's side. It is a plastic container that holds the coolant and is usually marked with a cap labeled for coolant. To access it, you may need to open the hood and look for a translucent bottle with level markings. Always ensure the engine is cool before checking the coolant level.