Body doubles, stunt doubles, and archive footage were used to complete the film following Paul Walker's death. Walker's brothers Caleb Walker and Cody Walker were among the doubles, and also provided voice-over for the character Brian O'Conner.

Production on the film was halted on December 1, 2013 following the tragic death of Paul Walker, who was killed in a car crash on November 30, 2013. Shooting had been underway in Atlanta and the film was scheduled to be released on July 11, 2014. Director James Wan and Universal executives held a conference call to determine how to proceed with the production in a manner respectful to Walker's memory. Walker was nearly halfway through filming at the time of his death. Although there was some consideration about scrapping the film altogether, the film eventually resumed productions following rewrites to address Walker's absence and give his character a proper send-off.

Some of Paul Walker's dialogue and footage was taken from previous Fast and Furious films. For example, Brian's conversation with Mia in the Dominican Republic garage is actually a deleted scene from Fast Five (2011). Similarly, the plane conversation between Dom and Brian has every shot of Walker rotoscoped from the conversation with Dom about their fathers from the same film.

Jordana Brewster (Mia) had to shoot her scenes at the very end of filming, because of her lead role on the since-canceled Dallas (2012) television series. She has stated that it was immensely difficult, given that most of her scenes were with her onscreen husband Brian, and by the time her scenes were filmed, Paul Walker had already died, requiring her to perform scenes with either one of Paul's two brothers acting as his body double, or with him inserted via computer graphics, or footage from an earlier film.

The guard rail that the heroes stand near overlooking Los Angeles is the same road/parking lot that Brian initially tests his Eclipse from the first movie.

Continuity

At Han's funeral, Dom is somehow the only one who sees Shaw drive up. Furthermore, Brian, Roman & Tej have no apparent reaction to Dom suddenly running off to chase Shaw down, despite him speeding off at high velocity in a very loud vehicle.

When Dwayne Johnson is seen on the hospital bed he has a couple of wires with pads on them attached to his chest. The one on his left is always changing from being flat to his chest to being only stuck down at the bottom with the top of the pad sticking up in the air. This happens several times during this scene.

In the first scene Jason Statham is seen looking out a window in what appears to be the top story of a building with the area seeming calm and a normal day. When he gets to the elevator we confirm by the floor sign that he is on the 7th floor, but when he walks out of the building and the camera pans back we see the building is only 4 stories high and there is smoke and fire outside, none of which is seen when he looks out the window seconds before.

In the government garage, Brian's car is shown to be a Subaru WRX STi sedan. However, when they go to jump out of the plane, it has become a similar looking hatchback version.

When Elena is describing Hobbs's injuries to Dominic she tells him Hobbs broke his leg in 2 places and later we see him in bed with a full leg cast. But when he decides he has to swing into action, no cast and he doesn't even walk with a limp.



Factual errors

In the opening scene in the hospital, the location is the United Kingdom. Electrical outlets in the room (behind the bed) are those found in the United States.

There was no character wearing the Oxygen mask in the dropping car scene. The atmosphere at such altitude cannot provide enough Oxygen for human to breath and they all should have lost consciousness.

Although there were a helicopter and a drone flying and shooting missiles around the city, no sign or reaction of the Air Force was seen until the very late of the battle.

When Hobbs downs the drone, he grabs the mini-gun and uses it. it's highly unlikely that a weapon fitted to an aircraft would have both the trigger assembly and the chainsaw style handle mounted on it.

Although numerous late-model vehicles - including Shaw's Maserati Ghibli and Aston Martin DBS, as well as Brian's Nissan GT-R - are shown colliding with other cars and random road objects, none of the vehicles' multiple front or side airbags ever deploy.



Incorrectly regarded as goofs

Luke Hobbs mispronounces "cavalry," as "Calvary." Considering how often the DSS works with the U.S. military, it's rather unlikely for an actual DSS agent to make this error. Calvary is the location just outside the walls of Jerusalem where Romans staged public executions. This is a very common pronunciation issue for people with Protestant backgrounds and is reminiscent of how many people mispronounce NASA as "Nassau".



Revealing mistakes

During the final fight between Toretto and Shaw, Vin Diesel's stunt double has much darker skin than Diesel.

None of the next door houses or Dom's garage seem to suffer any damage from the huge explosion, only few pieces of debris lands on the roof of the house on the right side.

In the chase and attack sequence in the mountains, when Brian approaches the armored bus from behind to jump aboard, keeping balance in the front of his car, none of the mercenaries on the bus does anything to prevent him from jumping in the first place. It is not believable that trained and armed mercenaries would allow an attacker to jump aboard their bus without any opposition, such as shooting straight at him. Given that Brian was reaching the back of the bus directly from behind, he was an easy target for armed and trained mercenaries, and as such they should have shot at him instead of let him jump aboard to engage in hand to hand combat.

When Paul Walker's character Brian O'Conner opens the control panel to allow Ramsey to regain control of God's eye, you can see the panel is powered off and there is a lock already on it. There is no way this panel would work without power.



Miscellaneous

When Hobbs lies in the hospital his vital signs machine goes from showing pulse and respirations to full vitals set including blood pressure and back within seconds. His numbers change depending on the camera angle. It takes about a minute or two for the vitals machine to measure blood pressure.

During the race down the mountain, Brian's car is riddled with bullet holes, yet Brian is unscathed. The amount of damage inflicted on his car would have killed him outright.

In the opening credits when Dom and Letty are driving to race wars, they use the same identical clip twice; once right before you hear them speak, and again right before Dom points at race wars. It shows the car diving up over a small hill heading to the right with some hills in the background.

In the scene where Brian jumps from the falling bus and catching on the spoiler of Letty's car, as she opens her car door (driver's side), the window is open just a crack, but when she closes it, you can see the window going up. Then, when she reopens the same door, once again the window opens a bit and then, as she gets into her car, you can see the window closing, again.



Audio/visual unsynchronized

In the very last scene you see Brian pull up to Dom in his Toyota Supra, the sound doesn't match the actual car but the Mitsubishi Eclipse from the first movie.



Crew or equipment visible

At the end of the movie, when we are panning back from a captured Deckard Shaw, you can see the cameraman's reflection in the glass.

When Torreto gets cornered at the canyon with Ramsey and when Jakande comes out of his Chevrolet suburban, the director - wearing a yellow shirt - is reflected in the door.

When Dom gets cornered on top of the cliff, there's a shot from behind one of the 4x4s - where the camera's reflection is visible.

Reflected in Brian's blue car as he gets in and the shot revolves around to the vehicle's rear end.

As Dom leaves his hospital visit to Hobbs, he gets in the lift and says he's bringing Han home on the phone. The elevator doors shut and a big, black shadow of the camera is reflected on the door.



Errors in geography

The opening scene shows the London skyline and has a caption saying London, England but when Jason Statham's character leaves the hospital, the hospital sign says Birmingham.

The Mercenaries in Azerbaijan use US-spec Mercedes.



Plot holes

When attacking the bus, the side-mounted guns are so powerful that they knock one car off the road, but they cannot even break the windshield of Brian's car.

Although only one car is mentioned as bulletproof, all cars somehow manage to repel all bullets including high-caliber mini gun fire.

Although the drone was crushed by an ambulance vehicle, its machine gun and the bullet clip were still intact and functioned normally. Additionally, as this was a machine gun attached to the drone, there should be nothing like a clear press-and-release trigger for Hobbs to use.

The Eye of God can communicate with every electronic device on the planet but the crew needs to be within 2 miles to connect to it to hack it. As long as they have an internet connection, they should be able to contact it from anywhere, location does not matter.

When Ramsey is describing Dom's crew, she says Brian is an ex-cop or military because of how he took down the mercenaries but she was in the cage with a bag on her head so she could not have seen any of the fighting. Subsequently she was on the hood of Dom's car when Brian was fighting Tony Jaa's character so she had no real way of making that assumption about Brian.