Neutral control is carried out during vehicle driving while decline in drivability is suppressed. During deceleration driving when the accelerator is not pushed, a C1 clutch pressure is gradually reduced in a state where an automatic transmission (12) is left in a current gear stage (GSN) (phase 2 control), and if a starting gear ratio input rotational speed (NINS) during deceleration driving becomes equal to or less than a predetermined rotational speed (NEIDL+ss), the C1 clutch pressure is reduced such that a clutch (C1) is completely released in a state where the automatic transmission (12) is placed in a first gear stage (phase 4 control). For example, if a certain speed (V) is reached, output torque (TOUT) is gradually reduced according to the gradual reduction of the C1 clutch pressure so as to suppress the uncomfortable sensation caused by variation in deceleration speed. In addition, for example if the certain speed (V) is reached, the clutch (C1) is in a slipping state, and when the accelerator is pushed and N control during driving is thereby cancelled, a sensation of slowness upon re-acceleration can be suppressed while engagement shock is also suppressed.