A straddled vehicle comprising: an engine that has a crankshaft and configured to output power via the crankshaft ; a driving wheel configured to receive a rotatory power output from the engine via the crankshaft , thereby driving the straddled vehicle ; an acceleration instruction part configured to instruct acceleration of the straddled vehicle in accordance with a rider's operation; a permanent magnet motor having a rotor directly or indirectly connected to the crankshaft so as to rotate in response to rotation of the crankshaft and a permanent magnet provided to the rotor ; a battery ; and an inverter provided with a plurality of switching parts (611 - 616) configured to control a current that flows between the battery and the permanent magnet motor by switching operation, wherein the straddled vehicle comprises a control device configured to: control the engine such that a rotation speed of the engine increases while the acceleration instruction part is instructing acceleration, while the acceleration instruction part is instructing acceleration, change an operating frequency of the inverter such that the operating frequency of the inverter falls within a range over 4 kHz but below 16 kHz from the outside of the range to assist the engine's acceleration, thereby performing power-running control of the permanent magnet motor , to thereby control both the engine and the permanent magnet motor to accelerate the straddled vehicle . an engine that has a crankshaft and configured to output power via the crankshaft ; a driving wheel configured to receive a rotatory power output from the engine via the crankshaft , thereby driving the straddled vehicle ; an acceleration instruction part configured to instruct acceleration of the straddled vehicle in accordance with a rider's operation; a permanent magnet motor having a rotor directly or indirectly connected to the crankshaft so as to rotate in response to rotation of the crankshaft and a permanent magnet provided to the rotor ; a battery ; and an inverter provided with a plurality of switching parts (611 - 616) configured to control a current that flows between the battery and the permanent magnet motor by switching operation, wherein the straddled vehicle comprises a control device configured to: control the engine such that a rotation speed of the engine increases while the acceleration instruction part is instructing acceleration, while the acceleration instruction part is instructing acceleration, change an operating frequency of the inverter such that the operating frequency of the inverter falls within a range over 4 kHz but below 16 kHz from the outside of the range to assist the engine's acceleration, thereby performing power-running control of the permanent magnet motor , to thereby control both the engine and the permanent magnet motor to accelerate the straddled vehicle . control the engine such that a rotation speed of the engine increases while the acceleration instruction part is instructing acceleration, while the acceleration instruction part is instructing acceleration, change an operating frequency of the inverter such that the operating frequency of the inverter falls within a range over 4 kHz but below 16 kHz from the outside of the range to assist the engine's acceleration, thereby performing power-running control of the permanent magnet motor , to thereby control both the engine and the permanent magnet motor to accelerate the straddled vehicle . <EOS>