Revealing mistake: When the Batcycle slams against the taupe BMW blocking the road, there is no driver inside, to allow for a safe stunt.
Revealing mistake: During the chase in Gotham, the armoured truck crashes against a jeep. The driver remains stiff as a board, unaffected by the violent impact or any laws of physics, revealing it's a dummy (or a CGI asset).
Audio problem: Outside the court, Iris replies: "Yes, a date Barry", but the word "Barry" is spoken from a side angle and her jaw is not moving.
Continuity mistake: When Barry meets his mother at the supermarket, he wipes the tears off his right eye. Shot changes and he's wiping his left eye.
Continuity mistake: In Batman's lair, after Barry has been electrocuted, the blood on his nose and mouth suddenly vanishes.
Continuity mistake: When the truck filled with drums overturns, a drum bounces out on the road. Shot changes and the drum is gone, only to fall again a second later.
Continuity mistake: When Old Barry tries to cross the wall with Young and fails, the way the fallen coat folds on the floor changes between shots.
Continuity mistake: When the Barrys try to flee the lab, Old Barry holds Young's shirt at chest level with his left hand. A shot later, his hand is lowered.
Continuity mistake: When Old Barry collapses in the lab, a yellow bottle lies 20 cm away from him. A shot later it's right next to him.
Continuity mistake: Old Barry collapses next to Young Barry, and lies next to his waist. A shot later he lies next to his head.
Continuity mistake: At the lab, when Young Barry collapses, his head lies on a white tile and his hair is all messed. A shot later it lies on a coloured tile and it's not messed.
Continuity mistake: When the Barrys are at the lab, the headphones are either resting on the table or on top of the coat. This swaps back and forth.
Revealing mistake: When the Barrys cross through the glass door, for a couple of shots, Young Barry's face is replaced with a non-realistic CGI face with features that don't match the face contour at all.
Deliberate mistake: When Flash is at the coffee store, the pavement is dry. When he exits the place dressed as The Flash, it's wet for cinematic purposes, but a mistake nonetheless.
Continuity mistake: While Gary wakes up, the stuff on the table changes positions or disappears between shots.
Continuity mistake: The Flash eats half a burrito, but when it flies towards the knives, it's whole again.
Continuity mistake: When Gary shows his Eric Stoltz tattoo, his arm and hand are resting on his knee. From the opposite angle, they are not.
Continuity mistake: When Barry-1 and 2 fight outside their home, the position of their hands has no continuity at all between shots.
Continuity mistake: When Old Barry meets Young Barry outside their home, the way the underwear folds on Old Barry's face differs between shots.
