I think the new car is totally fine. To be fair, besides the front, it's not drastically different from the current car, appearance wise.
And yeah, the 2015 actually looks like a New Edge Mustang refresh than anything, yet those are still Mustangs to me and sold VERY well... so....
I think the SN-95 sold well, because it was the only "performance" car in the game..... This mustang has a lot of competition.