When Mike crashes into the building, he smashes his windshield. Moments later, the windshield is intact again.
When Mike takes Nicole to the street-racers meeting, a line of girls is dancing in front of a car. When the camera switches position, the line of girls changes. In the very next shot, they are in their original position again.
When Katie is describing Nicole's new car to her, she shows how the doors open "scissor style". In the next scene when Mike comes over to take the car for a spin with Nicole, the door are back to "standard" Nissan 350z doors.
(at around 23 mins) Nicole supposedly made a huge drift inside a garage and at the end of it the wheels stay turned to the right. In the next shot, when she comes out of the car with Mike, the wheels are straight to the front.
(at around 1h 02 mins) Mike stops the car in front of Nicole's house with the headlights on. We don't see him doing any move to turn them off but about 1:04:20 they are off.
When Mike delivers his pizzas to Gargolov, he charges him 30 dollars. This movie takes place in Germany. Pizzas are never charged in dollars in Europe.
(at around 1h 17 mins) When the BMW is power slided we can see other skidmarks on the ground of other failed attempts.
(at around 29 mins) After the chair is doing circles we see someone spinning a steering wheel (and we see it's the Subaru because of the espresso cup) and right after the Subaru is drifting. But when the steer is spinning we can see by the odometer that the speed is 0 Km/h or 0 mph and the revs are also very very low (just the enough to keep the engine working).
(at around 1h 04 mins) When the BMW is coming towards the camera at night we can clearly see that that shot is being played at double speed.
In the first car chase, when the police car rolls over, a roll-bar can be seen in the car.
Before the start of the second street race (around 0:40:00), Nicole identifies the white car as a Toyota Supra, but it is a fifth-generation Toyota Celica.