2021 Nissan Almera (N18); or Versa and Sunny in some regions, converted as a GT300 class for Super GT. I took the liberty of implementing some features from Nissan LEAF RC as there are a lot of similarities with the design and also the Toyota Prius GT300.
Fictionally, I'd imagine mounting a VR38DETT directly in front of the rear axles. Would've been awesome if there's another economic sedan on the grid.