The type of bulbs used in the taillights of cars can vary depending on the make and model. In the case of 2015-2018 vehicles, many modern cars come equipped with LED taillights as a standard feature, especially in higher trim levels or for certain models. However, it’s important to note that this can vary, and some lower trim levels or specific models might still use halogen bulbs for the taillights.

To determine the type of bulbs used in the taillights of a specific car, it’s recommended to consult the owner’s manual of the vehicle or check with the manufacturer. Additionally, you can inspect the taillight assembly itself or consult a dealership or auto parts store for accurate information on the bulb type used in your particular car model and year.