Where is the radiator cap on 2001 Volkswagen bug?

On a 2001 Volkswagen Beetle (commonly referred to as the Bug), the radiator cap is located on the top of the coolant expansion tank, which is situated in the engine compartment. To access it, open the front trunk (frunk) of the car, and you will find the coolant tank on the right side. The cap typically has a symbol indicating coolant and should be twisted off to check or add coolant. Make sure the engine is cool before opening the cap to avoid injury.