I like the car and the renderings - but here are a few things to improve it and make it look more like a potential true concept (see pictured attached too). I'm sorry this is a bunch of modifications, and i might be too influenced by work...
1&2 : the sill line looks like it's bending down in the middle. Together with line 2 the whole car look like a "banana" in the middle, like it had a very heavy belly to carry
3 : in this view the upper window line together with upper windshield line is wobly
4 : at the parting line between fender and front bumper the wheel arch is not round, you need to move some cvs to correct that
5 : lower edge of bumper is too low compared to side sill. lower side sill or move this up... looks like the nose is going to fall down
6 : maybe the most important point : I think the wheels are too big for the car. Did you use some blueprints of an existing car (like the first supra for instance) to set up main proportions ? they look like they're 23" inch, and the tire are not low profile which increase the size even more. Looks like you had this sidewall ready to use and adapt the side of the tire to match it. The car looks like a crossover between a supercar indeed and an off road. Look at Ferraris or Lamborghinis wheels, they are often small (mean 19 or 20 inch at maximum), which helps getting low and lightweight cars....
7 : Caliper need more details
8 : Rear view mirror is a bit small (considering today's regulations )
9 : If the window is to be opened, another pillar is missing (or a bigger triangle to support mirror), considering the door panel parting line. Plus you need a sealing (weatherstrip) at the bottom line of the window