def identify_engine_thermostat_temperature(engine_temperature_regression_model
    ):
    """
    Identifies thermostat engine temperature and its limits [°C].

    :param engine_temperature_regression_model:
        The calibrated engine temperature regression model.
    :type engine_temperature_regression_model: ThermalModel

    :return:
        Engine thermostat temperature [°C].
    :rtype: float
    """
    return engine_temperature_regression_model.thermostat
