Factual error: The coastal wall in Sydney is shown as being inside the Sydney Harbour (right next to the Opera House). But Sydney Harbour is not on the Pacific coast but a part of the Parramatta river, several kilometres from the ocean (where the wall should have been). So the wall is either not shielding the northern part of Australia or (more likely) the producers decided that the audience cannot tell that it is Sydney unless we see the Opera House.
Plot hole: The Kaiju's EMP fries all electrical circuits next to him, and affects the base as well. If that's true, how did the helicopters carrying Gypsy survive the blast without having their electronics fried? EMP pulses induce current in all electronics regardless of whether they're powered on or not. (01:18:00)Marcus CaptainSlow Belicchi
Factual error: During the Hong Kong battle, one of the Kaiju disables the Australian Jaeger and the base by emitting an EMP blast. Becket claimed that the Gipsy Danger was immune because it had a nuclear core and was therefore "analog". Being nuclear powered has no bearing on whether a machine is analog or not, and the EMP would certainly affect all the electronic circuitry needed to control the Gipsy.Teru_Kage
Continuity mistake: When Gipsy Danger is lifted by the Kaiju in Hong Kong, they end up well above the clouds, and when Gipsy falls she eventually breaks through them. But in the shots when she is falling, you can see that there are no clouds around Hong Kong for miles. That, and Pentecost has a clear view of Gipsy through his binoculars.Friso94
Plot hole: Gypsy Danger grabs the wounded Kaiju and falls into the inter-dimensional rift, which opens in response to the presence of Kaiju DNA. That's how Gypsy Danger entered the Kaiju dimension, but Mako and Raleigh somehow escape the Kaiju dimension in their life pods without using Kaiju DNA. Obviously, the rift allows physical objects and energy to pass unobstructed from the Kaiju dimension into our dimension, but not the other way 'round. If this is the case, then Gypsy Danger's thermonuclear detonation in the Kaiju dimension should have burst through the inter-dimensional rift, as well, at least for a second or so, at roughly the speed of light. Given that Raleigh and Mako had only a 16 to 20 second head start ahead of the blast, they should have been vaporized.Charles Austin Miller
Continuity mistake: The crew of Striker shoots Leatherback in the eye, but in the next scene, it's fine.
Continuity mistake: After in the battle for Hongkong Otachi spits acid against Cherno Alpha, the Jäger's head is almost completely eaten away. but when Leatherback emerges and joins the fight, Cherno's head is there again (before it gets ripped off).
Continuity mistake: During the calibration with Mako and Raleigh, Gipsy's angles change between shots. (This takes place before and after Newton explains what happened when he drifted with the Kaiju).