Continuity mistake: When the kids steal the ice creams from the chubby guy, the amount of cream around his mouth differs between shots.
Continuity mistake: When the kids ride down the escalators there's a blonde kid watching and a man behind him with his hands by his hips. A shot later they are crossed over his crotch.
Revealing mistake: When Nicole's bike jumps over the kids lying on the ground there's a ramp beside them disguised as part of the road to allow for the stunt.
Continuity mistake: When the black rider chases the kids, the strap on his helmet swaps between loose or tied around his face. (00:46:23)
Visible crew/equipment: When the chubby guy grabs his bike, a white lighting screen is reflected on his black helmet.
Revealing mistake: When Nicole Kidman shows the kids some tricks she is replaced by a very obvious stunt, older, taller and... a man. Confirmed by Nicole Kidman, who said her stunt double was "a teenage boy wearing a padded bra." Source https://www.smh.com.au/culture/celebrity/kidman-s-made-off-like-a-bandit-in-hollywood-all-without-the-bmx-20211216-p59i2t.html. (00:36:58)
Continuity mistake: When Nicole Kidman is going down the water slide grabbing her BMX, one of the pedals is missing, but later reappears.
Revealing mistake: When the red and blue biker are on top of the van, before it crashes they're replaced with very obvious dummies.
Visible crew/equipment: When the police car arrives at the park, the boom mike is reflected on the rear window.
Continuity mistake: After jumping off the pickup truck, the bikers come to a stop and lighting screens get reflected on the red biker's helmet. This happens throughout the movie in many of the scenes involving the red biker. (00:06:38)
Revealing mistake: There's a short ramp by a truck's cargo bed, but when the bikers ride over it, it's become a longer ramp that goes up to the cabin to allow for the stunt. (00:06:14)
Continuity mistake: When the burglars' van drives off towards the bank, the thieves that were seated on the left side disappear.
Continuity mistake: The first time we see the thieves the van is parked next to a white brick wall about two meters tall. A shot later it's a very tall wall with a tree next to it.
Factual error: In one scene, our heroes go down a water slide with their bikes. Landing in the pool at the end would have made their walkie talkies unusable. But later they still work normally.