When Hobbs arrives at the barbecue, Roman remarks that they "better hide the baby oil," to which Hobbs replies with "you better hide that big-ass forehead." Hobbs' line was improvised by Dwayne Johnson, so Ludacris spitting out his drink and Tyrese Gibson being at a loss for words are both spontaneous, genuine reactions.
In the scene in London, when Dom is racing Letty, there is a small Asian boy who is seen watching the race from a classic London "double-decker" red street bus. The same kid was shown watching Dom and Brian while they pulled the safe in the previous movie, Fast Five (2011), it is Justin Lin's son.
Following Paul Walker's death on November 30, 2013, Universal announced that a portion of the profits from the film's North American Blu-ray and DVD sales would be donated to Walker's charity Reach Out WorldWide.
The tank chase was originally planned to be created via CGI, but director Justin Lin insisted that it had to be done practically with some post-production enhancements.
Hobbs (portrayed by Dwayne Johnson) is mocked three times as a different member of The Avengers. He is verbally referred to as "The Hulk" and "Captain America," and third, seen on a cell phone screen (caller ID) as "Samoan Thor".