[3] "E-RA" stands for "Electric—Record Attempt", with a stated goal of recording a lap time of 400 seconds at the Nürburgring Nordschleife in 2023.

[4] In addition, the STI E-RA was developed to the requirements of the FIA Electric GT Championship, which is scheduled to hold its inaugural season in 2023.

[7] STI's first project set speed and endurance records using three specially-prepared Subaru Legacy sedans in 1989;[8] its first model sold to consumers was the 1992 "Legacy RS Type RA" to commemorate the "Record Attempt",[9] and since then, STI has used the "RA" designation for its highest-performance models.

[4] In the FIA Electric GT Championship, cars are required to make a pit stop to charge at least once during the 45-minute race, and Motor Trend speculated the relatively small capacity was designed with this rule in mind.

[1] It is equipped with a large roof-mounted scoop for cooling and numerous wings and cutouts to increase downforce.