Factual error: All propane tanks for the last 30 or so years have a safety valve which prevents them from simply releasing gas when the valve is turned on. Given these tanks looked brand new and Jake only turns them on, the gas would not have been released.
Suggested correction: The propane tanks they use are PEN15 models and the safety mechanism is easily circumvented.
Factual error: When Phil Foster and the cabbie are trying to access the files on the flash drive, they use an Amazon Kindle. The Amazon Kindle does not have a USB connection for a flash drive.
Factual error: In the part near the end of the movie where the agents are told that they must push a kill switch to thwart Kitty Galore's satellite launch, Butch says "Look - that red button! It looks like an off switch." Butch is a dog, which means he is color blind. Doubly odd as in the first film Butch does mention that he is colorblind and cannot identify a red wire when he tries to defuse a bomb the Russian cat attached to the lab door. And yet, he claims the whole time that he's colorblind, when dogs aren't actually colorblind anyway. They only have a minor coloring difference, and they have somewhat poor eyesight.
Factual error: Sergeant-Major Saunders is wearing sergeant's stripes. Corporals Drake and Levin are wearing no rank insignia at all.
Factual error: After warping back from Iscandar, Kodai looks out of the window. Yuki Mori points him where Earth is. A moment later, he responds to the hailing signal saying that they are now 420,000 kilometres from Earth. Considering that the distance between Earth and the Moon is about 385,000km, Earth is looking unreasonably minuscule from their window. (01:52:50)
Factual error: Edgar's license plate is "FROG BROS", but California only permitted up to seven digits at that time. It wasn't until 2014 when eight or nine digits were permitted, but even then only in "very rare cases." (00:27:40)
Factual error: Bobby picks up a gas nozzle at the gas station and squirts gas at the bad guys. Gas nozzles won't activate without payment being made first.
Factual error: The movie takes place in Venezuela. Throughout the movie the Venezuelan army flies US-made UH-60 Blackhawk helicopters. However the Venezuelan army does not fly these, nor can they purchase them, since Venezuela is boycotted by the US.