Revealing mistake: When Drake's henchmen are chasing Eddie on the street while he is riding his bike on the sidewalk you can see the stunt man driving for him.
Revealing mistake: When the ambulance featuring the first Venom incarnation crashes it comes to a very sudden stop, like a piece of metal tipped over onto a magnet instead of sliding under its own momentum. Likely because they didn't animate the transition between the CGI of the crash and the stationary position of the set properly.
Revealing mistake: After the spaceship crashes to the Earth, the ambulance rushes the wounded astronauts to the hospital. On the way, a symbiote takes control of one man, and kills the emergency vehicle's driver, causing the van to wreck. The final shot of this wreck when the ambulance takes the last roll and stops on its side, shows the CGI involved with the unnatural movement of the van. (00:03:50)