Factual error: While bidding on eBay for the steering wheel, Vanelope tries to up the $350 bid by bidding $1,000. This scares off the real bidder, but Ralph and Vanelope don't understand how eBay works and bid against each other until they win with a $27,001 bid. That's not how eBay works. Vanelope's initial $1,000 bid wouldn't have set the high mark, but would simply have been her maximum bid in case the other bidder kept increasing his bid. The current high bid would have increased by the increment amount until it reached Vanelope's max bid. Now, it could be that the system recognized Ralph and Vanelope as separate bidders and that's why it let them keep upping the max bid. But, if the system had responded normally and simply increased Vanelope's bid to $355 with a max of $1,000, they might have realised what was going on and not started bidding randomly.
Plot hole: As shown when Robin comes under the influence of Slade's mind control device, the hypnotized people retain their abilities and higher intelligence, just with a loyalty to Slade. That being said, when Slade hypnotizes all the DC heroes, Superman and The Flash are among them in the theater. Slade orders all the heroes to chase after and destroy the Teen Titans. The Titans take off on foot with the others running after them and are able to keep their distance in a big chase sequence. Superman and The Flash never use their super speed to over take the Titans, which would have been so very easy.Quantom X
Continuity mistake: Green Lantern traps Doomsday into a vice grip and the monster looks up at him glaring as it starts struggling to break free. It jump cuts to a different angle just before Doomsday busts out of the vice and suddenly he's looking straight forward instead of up at Green Lantern. (00:42:55)Quantom X
Continuity mistake: As the film starts, young Constantine is smoking a cigarette with a close up of his fingers. The camera angle changes and suddenly his fingers are in noticeably different positions. Most obvious is the finger nails are facing towards his left and then his right. (00:00:30)Quantom X