Subaru kept it brief in the release of the new, “near-future” electric hypercar, simply saying that its first goal is to “record a lap time of 400 seconds (6 minutes 40 seconds) in a time attack at the Nurburgring circuit.” This, Subaru claims, it wants to do from 2023 onward following driving experiments at various circuits across Japan in 2022.
The STI E-Ra concept is powered by a newly-adopted and proprietary four-motor, four-wheel torque vectoring system dubbed “all-wheel control technology.” The system is said to produce 800kW, or roughly 1,073 horsepower, and features a lithium-ion battery with a storage capacity of 60kWh.
As far as the electric motors go, they will be produced by Yamaha Motor Co. Ltd. and be of the high-torque, high-revolution type with integrated inverter and gear developed specifically for hyper EVs, Subaru said in its press release.
The new torque vectoring system essentially aims to equalize the grip level across each wheel, ultimately stabilizing the car in order to maximize “the pleasure of driving.” The system is said to calculate the signals sent from sensors in each wheel, primarily wheel speed, vehicle speed, steering angle, G force, yaw rate, brake pressure, and wheel load in order to instruct the inverter on how much drive or braking torque to apply.
As far as the STI E-Ra’s structure, Subaru claims each of the motors is directly attached to the wheels, resulting in better responsiveness when driving. Subaru also added that the structure meets the FIA E-GT’s regulations due to its kinetic performance nature, hinting that it will be further developing things in that direction.