Dwayne Johnson said he tried hard to get Jason Momoa to play the role of Hobbs's brother, but scheduling issues prevented it from happening. However, Johnson gave fans hope for a future collaboration, adding, "Next Hobbs movie for sure." Vin Diesel then proceeded to go against Dwayne's plans by casting Momoa in Fast X as the sadistic, androgynous and flamboyant son of Fast Five's main villain, Hernan Reyes.
The idea of a "Fast & Furious" spin-off featuring Hobbs and Shaw first emerged during filming of Velozes & Furiosos 8 (2017), after producers and studio executives took note of the comedic chemistry between the two throughout their scenes together. Plans to actually develop the spin-off were informally green-lit towards the end of filming and they were later revealed to be the reason behind the much-discussed animosity that emerged between Vin Diesel and Dwayne Johnson in the final week of production, which resulted in Diesel reportedly canceling some of Johnson's scenes (which was within his purview as one of the movie's producers), and not showing up for filming at all on at least one day of production, leaving hundreds of cast and crew sitting idle. After news of the spin-off became public, co-stars Michelle Rodriguez (Letty Ortiz) and Tyrese Gibson (Roman Pearce) publicly criticized it for damaging the Fast & Furious "family", as well as pushing back the release of Velozes & Furiosos 9 (2021) by at least a year. Johnson would subsequently quit the main franchise, opting not to return for the ninth, tenth and eleventh movie. Although Dwayne did return to film an end credits cameo appearance in Fast X, he did not film any scenes with Vin Diesel. Dwayne stated he still has plans to make a second and final standalone Hobbs movie, in which audiences would get to see his character "walk off into the sunset".
Deckard Shaw is about two years older than his sister Hattie. In reality, Jason Statham is twenty-one years older than Vanessa Kirby.
The exterior of the curved E.T.E.O.N. headquarters building is actually the McLaren Technology Centre, where the McLaren Formula 1 team is based. The building was added to a CGI landscape.
When Hobbs and the Shaws are reconnoitering before heading to Moscow, Hobbs is referencing all of the cars pertaining to Deckard Shaw overcompensating. When he gets to a Mini Cooper he says, "This is more like it." Shaw then claims he used it in a job in Italy. Jason Statham was a main character in Uma Saída de Mestre (2003), re-make of 1969's Um Golpe à Italiana (1969) in which the heist featured Mini Coopers driving through a mansion.