Subarus STI becomes electric with 1,073 HP STI E-RA, Solterra STI

Subaru shows two STI taste concepts for electric cars Tokyo Autosalon which opened today: STI E-RA and Solterra STI.

Despite being both battery-powered, these concept cars are very different. That STI E-RA, which represents “Electrical record attempt,”Is a near future motorsport study developed under the STI E-RA Challenge Project.

Subaru’s goal with this EV racer is to record a lap time of 400 seconds (6 minutes and 40 seconds), which would beat Nine EP9’s time by almost six seconds. It will make an attempt in a time attack on the Nürburgring Nordschleife circuit from 2023; in preparation for this, the vehicle will undergo several trials on Japanese tracks this year.

With a maximum power of 800 kW (1,088 PS / 1,073 hp), STI E-RA utilizes Subaru’s expertise in “four-wheel control technology,”With 4-motor, 4-wheel torque vector technology enabled by four electric motors located near each of the four wheels.

Developed and supplied by Yamaha, the high-torque, high-speed motors have integrated inverter and a gear and draw power from a 60 kWh lithium-ion battery.

“The unique torque vector system is a technology that balances the road grip limit for each of the four wheels with a driver-focused control system whose highest priority is the pleasure of driving. This raises the grip level to the maximum and stabilizes the car’s body position.”

Subaru says that this configuration enables a high level of responsiveness and a direct control of the body’s curvature. As this system is capable of maximizing the kinetic performance of a vehicle and included in the rules of future motorsport (FIA E-GT), Subaru sees it as “the best direction for us to work in.“The company will also use the experience from this project in”an initiative for a future electrified society.

Moves on to Subaru Solterra STI Concept, it explores a visual performance package for the mid-size electric SUV. The body set includes a roof spoiler, more sporty bumpers with round fog lights at the front and a diffuser at the rear, cherry red lower body elements and black alloys with a touch of cherry red. The vehicle also has a special STI shade of blue combined with black trim on the wheel arches, lower part of the doors and bumpers.

There is nothing to suggest that Subaru has made changes to the Solterra driveline, which should have the same twin-engine setup with 160 kW (215 hp) and 248 lb-ft (336 Nm) of torque. The 71.4 kWh battery offers an estimated range of over 220 miles (354 km) in the United States.

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