Continuity mistake: When Trevor and Lucky go up to the rooftop before the final battle, they lean over and rest their hands on the middle of a tile. From the opposite angle, they're resting on the section dividing two tiles.
Continuity mistake: While chasing the dragon, a laser beam destroys a Brooklyn Bridge road sign, and the car drives past it. An immediate aerial angle shows the sign on the road, but the car is suddenly metres behind, driving towards it.
Continuity mistake: When the movie begins, the Ectomobile drives by Cole Haan and continues to speed through Manhattan. When the manhole flies upwards, the car is suddenly next to Cole Haan again. This also happens with other locations that the car drives by twice.
Continuity mistake: The name tag on Podcast's uniform is always hand-written. When he puts on the scarf to start the final battle, it still is hand-written. When he shows up to smash the cables box, it's now a black and red sewn name, just like the rest of the Ghostbusters' uniforms. According to Ghostbusters Fandom there's a deleted scene where Ray gives Podcast an official name patch. (https://ghostbusters.fandom.com/wiki/Ghostbusters:_Frozen_Empire_Deleted_Scenes#google_vignette).
Continuity mistake: When Manhattan starts to freeze, the car speeds through the streets with Callie and Phoebe in the copilot's seat. In the close-ups, one can see that the place is empty. In some shots, there's a shadow of a bulky object, maybe a dummy of some sort or the driver, but it's definitely not the two actors.
Continuity mistake: When the Ghostbusters win the final battle and face the Mayor, Winston's hand is on his shoulder or not, depending on the shot. This swaps back and forth.
Continuity mistake: After the car makes a U-turn, Callie's arm is not resting on the seat. A shot later, it is. (00:05:51)
Continuity mistake: After the car stops near City Hall Park, its position differs completely between the first and second shot, plus dark skid marks suddenly appear, despite the car not moving.
Continuity mistake: While chasing the dragon, the car makes a left turn, and skid marks from previous takes are visible on the road. (00:06:24)
Continuity mistake: When the movie starts, the car is packed with people. When it skids and makes the U-turn, there's just the driver.
