Other mistake: In the book Hazel is reading near the start of the film, the word 'to' is used 4 times in a row.
Continuity mistake: In the night-of-the-broken-trophies scene, take a look at the trophy Augustus hands Isaac first. The 2nd time he smashes it against the wall, it is a different trophy. (00:23:25)
Continuity mistake: When Hazel shows her hand in support group (when Gus is present) the girl near her has her collar open but as she stands up the girl has her collar closed. (00:09:10)
Continuity mistake: In the Night of The Broken Trophies scene, when Isaac stands up and goes after the TV, there is a clock visible to the left of his head. The clock's time changes drastically about five times.
Continuity mistake: In the scene where Gus is showing Hazel the virgin diagram, when they are seen standing, there is a deep ridge in the dirt that curves around the diagram. When there's a close up on it, the ridge is not as deep and seems to be running tangent to the circle.
Factual error: They travel on a Boeing 777 to Amsterdam. The shots in the airplane are in a much smaller cabin (3 seats/aisle/3 seats). The 777 seating in economy class is 9 or 10 seats across, with two aisles. (01:29:00 - 01:30:00)
Continuity mistake: In the scene where Hazel is kneeled in front of Isaac in Augustus' game room, her hair changes between shots. (00:22:05)
Continuity mistake: In the support group scene including Augustus, when he shows off his prosthetic leg, he pulls his jeans back down over his shoe. In the next shot, his jeans are tucked into his shoe.
Continuity mistake: In the scene back at the park with the huge skeleton the kids are playing on, Gus talks about how he wants to be remembered and Hazel gets angry with him. During this scene, about every cut shows Gus having his head in a different position than in the previous shot.
Continuity mistake: In the scene where Augustus wakes up in the hotel in Amsterdam, the clock on the nightstand reads 9:11. It says 8:49 in the shot where he find the note.
Continuity mistake: After Gus is discharged, Hazel takes him to the park, Gus displays his disappointment over not being able to have much of time to live, and Hazel lightens him up, her hands covering her knee caps. Gus bends over on to Hazel's side to take the bottle of wine and as he takes charge of it, Hazel is seen with a glass of wine that wasn't present initially. (01:42:30)
Other mistake: At the end of the movie, when Hazel is reading the letter given to her by Van Houten that Gus wrote, Gus' voice-over says "I think we'd make a good team", but on the paper that sentence just reads "We'd make a good team."
Factual error: When Hazel Grace goes to the hospital with fluid in her lungs, her monitor shows she has 97 percent oxygen saturation. Even after the fluid was drained from her lungs and regardless of her being on oxygen, given her disease and diminished lung capacity, her oxygen saturation would have not been as high as that.
Revealing mistake: Tanner Boatwright was used as a leg double for Augustus. In the part of the sex scene where they shoot from the feet up, you can see that the amputated thigh is thinner and has a slightly different colored tone of leg hair than Ansel's actual leg. (01:05:25)
Continuity mistake: When Hazel is given the blue dress by her mother in Amsterdam, her mother puts it near the bottom of the green dress she is lying on the bed, but in the next shot the green dress is to high for the bag to be at the bottom of the dress. This happens a few times after it as well.
Continuity mistake: During the egg scene, an egg hits the door to the house and one of the windows. The door egg is shown once more before disappearing. The window egg just disappears completely.
Visible crew/equipment: This mistake occurs during the pre-funeral scene. When Isaac is at the podium, they occasionally show a shot from over his shoulder where you can see Gus and Hazel. All the way to the left of the screen, there is some sort of black object that looks like something that holds cords on the floor. This object disappears by the time Hazel gets up there.
Continuity mistake: At the beginning of the movie, she's at the doctor "late in the winter of her 17th year." She meets Gus not long after. When he is texting her about AIA at the table, the date on her phone is in May. It seems that the passage of time is a bit off.
Continuity mistake: Murph, the support group dude with no hair, is seen walking our of a car in the background of the second support group scene while Hazel and her mom are talking. He is seen moments later in the elevator seated in a wheelchair.
Continuity mistake: In the scene where Hazel and Augustus are leaving Peter Van Houten's house, his assistant comes out and zips her coat all the way up. In the next shot, however, it's zipped to the middle.
