Of the four leads that portray the all American band, Motley Crue, Colson Baker aka Machine Gun Kelly who plays Tommy Lee is the only actor who is actually American in real life. Douglas Booth (Nikki Six) is from England, Iwan Rheon (Mick Mars) is from Wales, and Daniel Webber (Vince Neil) is from Australia.
In the scene when Nikki wakes up in his hotel room with a groupie next to him, he throws a burrito out of the bed. According to Vince Neil, after a night of sex with groupies, Mötley Crüe would drive to a restaurant to buy egg burritos and rub them on their crotches to cover the smell of sexual intercourse so their girlfriends would not suspect their activities.
Roxy, Tommy Lee's first fiancé in the film, is based on a woman named Honey. In real life, Lee kicked Honey out of a limousine after she insulted his mother. When she started hitting him, Lee punched her in the face, knocking out several of her teeth.
Elektra Records' deal with Mötley Crüe never came to an end because of Nikki Sixx demanding it so (as the movie portrays); it all actually happened because their contract expired, putting the band in total control of its destiny and including the ownership of the masters of all their albums, including outtakes and supposedly discarded material.
Pamela Anderson is not seen, nor is her relationship with Tommy Lee mentioned. Anderson was Lee's third wife. They had been married for about six months when Vince Neil's daughter Skylar died in August 1995.
The woman in the beginning that has the orgasm at the Mötley Crue party is based on a real person and was nicknamed 'Bullwinkle' by the band - a reference to her less than flattering facial features. She was a girlfriend of Tommy Lee and was infamous for her 'squirting' according to their book 'The Dirt'.
When choosing the name for the band, the name 'X-Mass' chosen by Nikki Sixx actually was well spelled 'Christmas' when it was first proposed, then changed it to make it look more "provocative". The name "Mötley Crüe" indeed was suggested by Mick Mars as it was his favorite from his former band, "White Horse".
Vince Neil's return had other reasons than just Mötley Crüe's appeal for reunion. Elektra Records made the band fire Corabi under the "low sales" excuse. At one point, even John Corabi admitted that his album with the band had both Mötley Crüe and Elektra skeptical about the results in sales and fans accpetance; however, this was not specifically portrayed in the movie.
The scene where Nikki Sixx demands Elektra's Tom Zutaut the ownership of Mötley Crüe's material rights took place after Vince Neil's reunion, unlike the movie. The band even released the reunion album (Generation Swine) under the Elektra Records label but then again it became a new commercial failure due lack of support from Elektra.
It is implied that "Looks That Kill" (from the "Shout At the Devil" album) is the first music video the band ever did when in fact, their first video was "Take Me to the Top" (from the "Too Fast for Love" album), which was made under an evident low budget.
This film leaves out several events that took place between Mötley Crüe's reunion with Vince Neil in 1997 and their farewell show in L.A. in 2015, including the band's split with Tommy Lee from 1999-2004 (he was first replaced by Randy Castillo and then by Samantha Maloney), receiving an awarded a star on the Hollywood Walk of Fame, and live shows, press and other events supporting their post-1994 albums.
While not addressed accurately, it's well known that the overall relationship between Elektra Records and Mötley Crüe experienced a fallout that led Elektra to give little support to major events within the band, thus these situations can be implied when seeing some particular scenes and actions, for example: Their new album with John Corabi (lead singer after Vince Neil's departure) had little support from Elektra, thus reporting low sales. This can be seen in the scene where Mötley Crüe's concerts have less attendance than before.
Vince asks Razzle before the fatal crash who would you choose to have sex with or you'd die, the choices were Cyndi Lauper or Boy George. Douglas Booth, who portrays Nikki in the film, portrayed Boy George in Worried About The Boy (2010).