Roman claims his car is 1 of only 4 in the world and Tej claims to own the 2nd, Roman's car is a Koenigsegg CCXR SPECIAL EDITION (1-of-2) and Tej's car is a Koenigsegg CCXR (1-of-many). For Roman and Tej to be correct they wold both need to own the Koenigsegg CCXR EDITION (1-of-4).
When the team receives a copy of the safe in the police station, Tej asks how did they get it, Han answers "We had a life before you met us", A reference to what Tej said in the van while controlling the remote control vehicle in the police station. However only Brian and Roman were in the van with Tej.
While Mia, Brian, and Dom explore Reyes' GPS data, they select the option "Ultima Lugares" as the most recent places registered by the gadget. In Portuguese, adjectives have their endings modified according to the noun gender and number. Since "lugares" (places) is plural and male in Portuguese, the correct phrase should be "Últimos lugares". "Última," as used in the movie, means "last." For example, a singular and feminine noun such as "Supper" would be translated to "Última Ceia" or Last Supper.
Dom and Brian were dragging the vault out of the Police Station behind their cars, on their first turn to right, the vault rolled over three or four times hence causing the attached strings to entangle. However in the next scene the strings were not entangled but straightly connected to the cars. The same mistake was made repeatedly during the pursuit.
When Toretto sees Elena wearing his cross, the chain is short, holding the necklace at the hollow of her throat, so he can see it at the opening of her collar. When she returns home, the chain is long, causing to cause the cross to sit below the neckline of her tank top, which would have been well out of sight.
When Hobbs confronts Toretto at the party, he mentions how Toretto nearly beat a man to death with a socket wrench. When Toretto tells Brian the story in The Fast and the Furious, he says he used a torque wrench.
When Dom drives the Corvette Grand Sport off the train car it lands on its driver's side front corner and the fascia crushes and the outside light breaks. A second later as he drives away there is no damage to that corner of the car.
When the safe is being unlocked at the end, there are wires going from a laptop to the safe's electronic system. When the door is starting to open, the wires are still attached, yet the next shot of the vault where the door is opening wider, the wires are gone.
When the police chief enters the evidence room after the vault is stolen, Hobbs punches him in the face from outside the frame on the right, knocking him to the ground. When this occurs, the viewer can easily see a boxing glove on the right side of the frame before it cuts to Neves telling him to stay down.
During the final chase, you can see three kinds of police cars: Civilian Police (black and white), Military Police (blue and white) and Federal Highway Police (yellow and blue). You will not find Federal Highway Police cars inside the cities, they only patrol the interstate highways.
Reyes has no reason to open his safe the first time we see it. He asks whether all of his money is in his safe as if he wasn't present when the money was previously deposited off-screen. He's supposed to be the only one able to open his safe.
Nearly the whole time that Elena is wearing Dom/Letty's cross necklace, it is very short around her neck. If it were this short in reality, Dom could never wear it; it would practically choke him if he could get it on at all. But when Elena returns to her home right after she and the others try to arrest Dom and Brian, it is much longer, hanging at breast length. But even that would be too short for her to have doubled around her neck before.
When Vince extracts the chip from the car we see the electric contacts are just next to his fingers. This is incorrect; the chip should have been installed by the production team with the contacts on the opposite side to his fingers.
The goof items below may give away important plot points.
The team steals four 2011 Dodge Chargers from a police lot, but when two of them are repainted and used to drag the stolen safe through the city, the Chargers are of a previous model year as identified by the tail lights.
When Gisele and Han drive on the German autobahn, there is a street sign at the side. It consists of three different parts which don't appear this way in real life due to strict regulations. The first sign for Berlin would have the number of the Autobahn next to it. In addition, it would not show Berlin at all, since the next sign identifies the location as near the Rhein-Neckar-Zentrum near Viernheim in Hesse. Since Berlin is on the other side of Germany, the sign would show a city much nearer (like Darmstadt, Mannheim or Frankfurt/Main). The last sign shows the distance to the next commercial area as "3-4". However, it must read "3-4 km".