Vehicle power supply system

A vehicle power supply system comprising:

• a power storage device;
• a plurality of devices including a plurality of noise generators;
• and
• a power distribution circuit that connects the power storage device and the devices, wherein
• each of the noise generators is connected to the power distribution circuit via a noise filter;
• the noise filter includes a first impedance element and a Y capacitor that is provided closer to the noise generators than the first impedance element;
• and
• the first impedance element provided for each of the noise generators is an impedance element with a shape and a material that increase a first system impedance of each of the devices to be higher than a predetermined lower limit impedance at least in an amplitude modulation band, and the first system impedance is an impedance on a power distribution circuit side with respect to a connection portion of each of the devices with the power distribution circuit.