To prevent the generation of an incompatible feeling at the time of getting away from economic running operation by operating an air flow regulating means to regulate the air flow rate to an engine, raising the engine rotating speed to reduce the slippage of a transmitting route releasing means, and then connecting the transmitting route releasing means.

Whether automatic fuel consumption-saving operation condition (economic running condition) is not established or not is judged (S204). When it is YES (S204 Yes) where the automatic fuel consumption-saving operation condition is not established, and escape from the automatic fuel consumption- saving operation is performed, it is judged whether a prescribed time passes from the non-establishment of the automatic fuel consumption-saving operation condition or not (S210). When it is NO (S210 No) where the prescribed time does not pass, it is judged whether the output rotating speed of a clutch is higher than the input rotating speed or not (S212). When it is YES (S212 Yes) where the output rotating speed of the clutch is higher than the input rotating speed, the slip judgment value of the clutch is set (S214) since the rise of engine rotating speed is required.