Ōta's leading industry is manufacturing, centered in the southeast part of the city. Ōta leads the prefecture in manufacturing revenue, which exceeds annually. It is the home of the car manufacturer Subaru, a subsidiary of Subaru Corporation, formerly known as and Hino Motors. Subaru-chō is where the Subaru BRZ/Toyota 86 is built, having been re-purposed from "kei" car production, Yajima Plant is where all current Subaru cars are built, Otakita Plant is where commercial "kei" trucks are built (originally the location of Nakajima Aircraft), and Oizumi Plant is where engines and transmissions are built.