During the race, weather conditions constantly varying between cloudy, sunny and rainy. In the same sequence, the track is repeatedly very wet in one moment and completely dry in the other one.
Chan Foh To wears dark colored shoes during the autoshop fight but near the end of the fight when there is a close-up shot of his foot kicking the lead henchman in the face, his shoe is white.
Just moments before the Lancer Evolution III crashes there is no wing on the car. In the next shot there is.
Just moments before the Lancer Evolution III crashed it can be seen from the other driver's perspective that there was no wing on the car, but in the next shot the wing can be seen clearly.
In the US version, you can read on the opening credits "A JACKIE CHAN FILM", but at the end of them, Gordon Chan appears with the director credit.
When Amy uses the phone booth after entering the casino, some of the film crew, particularly the boom operator, are reflected in the glass.
In the beginning of the race, Foh enters the pitlane. Krugman has already passed the pit entry. Foh gets a 30 second penalty, and has to stay in the pit for 1 minute 31 seconds. At 1 minute 15 or so, Krugman comes in, which means he did a very fast lap (q-time was 1:39). During his part of the race, Krugman laps Foh, but Foh is never seen relapping him, while winning the race.