Factory class is not supporting SOLID principle

I have code as shown below

 public interface ICar
{
    void Created();
}

public class BigCar : ICar
{
    public void Created()
    {

    }
}

public class SmallCar : ICar
{
    public void Created()
    {

    }
}


public class LuxaryCar : ICar
{
    public void Created()
    {

    }
}

public class CarFactory
{
    public ICar CreateCar(int carType)
    {
        switch (carType)
        {
            case 0:
                return new BigCar();
            case 1:
                return new SmallCar();
            case 2:
                return new LuxaryCar();
            default:
                break;
        }
        return null;
    }
}

In this code I have a factory which is returning the concrete instances. But every time I need to have a new implementation of the ICar interface, I have to change the CreateCar() method of the CarFactory. It seems like I am not supporting the Open Closed Principle of the SOLID principles. Please suggest is there a better way to handle this scenario.