The Devil Z is supposed to be equipped with twin turbo chargers, but when the car is fired up for the first time, a naturally aspirated motor equipped with triple carburetors is shown.
When the Devil Z crashes, a 1970s-era Mitsubishi Lancer Celeste is used instead of the Nissan Fairlady Z.
The wrecked S30 at the junk yard in the beginning is a 2+2 model, not a coupe like the S30 driven in the rest of the movie.
When Kou-chan is looking over the S30 at the wrecking yard, he says the car has slotted rotors, however, the car actually has solid faced rotors.