Revealing mistake: When Lupe Lamore puts Sanchez's iguana down on the table near the end of the movie, you can see the iguana bounce slightly. Also, it isn't breathing.
Revealing mistake: During the tanker chase scene, the characters are driving Kenworth W900B tanker trucks. The W900B series trucks have cab door latches located on the bottom, rearmost corner of the cab doors. After Bond forces another truck into the ditch, its driver can be seen climbing out of the wrecked truck. The door latch on this truck is now located just below the window. Kenworth stopped using this style of door latch in the early 1970s on the W900A, the W900B's predecessor. The truck in the ditch has been swapped out with an older W900A for the explosion shot.
Revealing mistake: After the fire starts, people go in with extinguishers, but can be seen in the background waving them around without anything coming out of them.
Revealing mistake: In a quick shot where the divers are coming into save Sanchez as the van has been ditched into the ocean, you can see the man in the van is not Robert Davi but a stuntman. It then changes shot to the diver giving Robert Davi a spare demand valve. (00:16:05)
Revealing mistake: When Sanchez is burnt alive, check his soaking hair and face, and you'll notice he is covered in fire retardant gel.
Revealing mistake: Sanchez tells his goons to fire a rocket at Bond's truck and drives away. Skid marks from a previous take are already on the pavement. Also, after the goons fire, the skid marks disappear.
Revealing mistake: When Leiter is saved by scuba divers, not only is his stunt double noticeable, but he is Sanchez's very same stunt.
Revealing mistake: When Ed Killifer is on the van leading Sanchez to jail, he hits a guard on the face with a shotgun, but the guard is already wounded before being hit.
Chosen answer: "License to Kill" is partly based on the novel "Live and Let Die" and the short story "Hilderbrand Rarity". However, it is the first Bond film not titled after a book. While "The Spy Who Loved Me" shares its name with a book, it was the first Bond film not based on a book (though subsequently, there was a novelization of the film.) "Goldeneye" is the first film not based on a book AND not titled after a book.