The name Subaru was chosen for the car company because of its association with the Pleiades star cluster, which is said to be a symbol of unity and togetherness. The six stars of the Pleiades are also said to represent the six founders of the Subaru company.
In addition, the name Subaru is also a play on words, as it can be interpreted as "subar" (excellent) and "aru" (to be). This is a fitting name for a car company that strives to produce excellent vehicles.