A mobile car tuning game could have been a great idea. If someone downloads a game with Forza's branding on it, they would normally expect the car tuning experience offered in the Horizon series. However, in this game, you try to achieve the specialisation of your vehicle by tweaking its appearance, which is clumsy.
But worse than that, every time you swap out a part, you have to play a silly puzzle game, and even then, you have to follow a path, just like in a graphic novel. Heck, a game of dress-up is more fun than this. In the end, this doesn't even touch on the really fun stuff, like putting a diesel engine in a vintage Beemer, adjusting the rear and front wing angles, and changing gear ratios.
There's a lot of this sort of thing going on these days, and I wish they'd pick one element and make it clear. These shoddy capitalist Frankensteins are cancer on the gaming market, offering very low-grade pleasures that never truly satisfy anyone and lowering the quality of the entire market.