Disclosed is a hybrid vehicle with a transmission, the transmission including a transmission input shaft (25) to which the power from the engine is transmitted, transmission output shafts (26, 27) from which a power for driving a driven section is outputted, a first input shaft (21) which is connectable to the transmission input shaft (25) via a first clutch (CL1) of a twin clutch unit (20), a second input shaft (22) which is connectable to the transmission input shaft (25) via a second clutch (CL2), gear trains (G1 to GR) which are configured so that the gear trains can be selected to connect the first input shaft (21) and the second input shaft (22) to the transmission output shafts (26, 27), and a connection device (SM1) which can be selectively switched between a first operation state for enabling power transmission between the output shaft of an electric motor (3) and the transmission input shaft (25) and a second operation state for interrupting the power transmission therebetween.