Factual error: Brian tells Dom that hector is running spoon engines with T66 turbos and a motec system exhaust. Spoon engines are typically 1.6L and are a terrible drag racing choice, also a 1.6L engine cannot properly spool a T66 turbo as the exhaust gasses do not have enough pressure to effectively spool the turbo.
Continuity mistake: Right at the end when Vin and the rest are preparing to rob the final truck, Vin says something like "Let's go." A duffel bag of equipment comes flying at him, presumably from another person, that Vin catches in mid-air. In an immediate overhead shot from Vin's back, he has the bag in his hand but there is no one anywhere near him who could have thrown the bag. The closest person in maybe 25 feet away. The shallow angle that the bag arrived and the heavy equipment in it shows that it was a close throw of a few feet at most. (01:16:00)
Factual error: In the beginning of the film where Jessy is looking under the hood of Brian's car he says he has a T4 turbo. On NON turbocharged Eclipses, the intake is routed along the driver's side of the engine, which you can see (the big chrome tube). On the turbocharged Eclipses, the intake is on the front passenger side and routes to the passenger side of the engine to the throttle body near the fire-wall. Non turbo Eclipses have the throttle body on the driver's side.
Visible crew/equipment: In the scene with the race with the Dodge Charger, the Dodge hits the truck, flips over, and the air filters sticking out next to the air intake disappear. In fact, the car used in the flip is a replica, with a fake intake stuck on top of the bonnet. (01:37:40)
Factual error: In the final drag race against the charger vs supra, when Dom launches the charger it isn't smoke coming from the tires as it dissipates very quickly, indicating it's a fog machine or something similar. And as every car guy will know, two things that happened during Dom's launch are both possible separately but legitimately impossible to do at the same time, as we see Dom pulls a wheelstand while his tires are spinning. It makes for a cool shot but physically impossible, you need traction to do a wheelstand meaning zero or minimal wheel spin, and if his tires were doing a full blown burnout, he could not have gotten the front end to come up as it does. Not to mention as he pulls a wheelstand, the entire front end comes up before the car even started rolling, if it was a true wheelstand, it would've gone at least 7-8 feet before the front end reached max height.
Audio problem: In the first hijacking scene, where the Honda Civic darts under the trailer, you hear the car shift up 3 times. Each time, it pulls high revs, yet the Civic doesn't move forward (at one point it almost goes under the rear wheels of the trailer) or crash into the back of the main tractor unit. Surely, with the performance of these vehicles against a laden truck, shifting up three times would have caused it to hit the tractor unit. (00:02:39)
Continuity mistake: When Brian and Dom get pulled over by Tran's gang, there is a shot of both Brian and Dom getting out of the car and shutting their doors. Then it cuts to a shot of Lance taking off his helmet. If you look in the background, you can see Brian getting out of his car again, and shutting his door again. (00:27:27)AFosteROTC
Continuity mistake: Watch the scene where everyone is scrambling to run to their cars after Leon yells "Cops!" When Mia runs and gets into the passenger seat of Letty's purple 240SX, you can see that the driver is not Letty. The driver looks nothing like Letty (hair and face are different). (01:46:48)
Continuity mistake: In the scene where the cars are hijacking the truck with the harpoon, it shoots through the windshield, leaving a big, shattered hole. When it cuts back to the truck again, the windshield is fine. (01:21:22)
Continuity mistake: In the scene with the motorcycle chase they jump off the same hill twice which is in West Hollywood, once they go down the hill and turn the corner they are magically in San Pedro. (01:35:29)