Factual error: Near the end of the chase, when Buddy is ramming the bad guys' car, the scene is supposed to take place in New Jersey as they just crossed the George Washington Bridge. However we see a road sign for NY 100/133, indicating they are back in New York state on the Taconic State Parkway.
Revealing mistake: When the Grand Ville turns onto the street where the children are playing, it clips a parked car as it makes the turn. This is the same car that later gets its driver's door ripped off by the Grand Ville just before the police give chase. It was repainted red for the second scene, but note the same dent in the right fender as before.
Audio problem: Despite the fact that Scheider's character is driving a Pontiac Ventura with an automatic transmission (note the floor pedals), the sound we hear is of a four-speed manual car being 'double-clutched' (reused sound from the Mustang GT in the film 'Bullitt'). (00:55:30)
Visible crew/equipment: Halfway through the big car chase, just after a black-and-white police car also joins in, you will see the cars navigating through an S-turn, heading toward the river. On the far sidewalk is a camera and crew filming the same sequence, and the shots from that camera, showing the same S-turn sequence as the cars approach, immediately follow. (01:01:30)
Continuity mistake: As the blue sedan turns onto the street where the children are playing, the street is entirely in shade. But after the children begin reacting, the car approaches in full sunlight. (00:56:20)
Revealing mistake: During the car chase sequence, the same white 1965 Rambler American (with bent drivers/front fender) is seen repeatedly getting 'in the way'. (00:54:20 - 00:56:15)
Factual error: The Greyhound bus involved late in the chase is heading northbound on the Palisades Parkway in New Jersey, heading away from New York City (which the sign above the windshield indicates is its destination). (01:01:20)
Continuity mistake: When the silver coupe turns onto the street where the children are playing, the street is in full sun. But as the kids react, they see the car approaching, now in shadow. (00:56:30)
Factual error: Scheider is honking the car's horn during the chase, but a close-up shows him pushing on the top of the outer rim of the steering wheel, while the horn switch is actually part of the center pad. (00:55:10)
Continuity mistake: When Buddy gets on the radio to the marked cruiser to close off the bridge, the radio is in his right hand, yet the next shot while he is still talking shows his right hand on the steering wheel.
Continuity mistake: During the car chase scene with the kids in the street, they show Roy Schneider's car pass the kids who are scrambling to the sidewalk. From the far end of the street they show the cop killer's car, just as it begins to turn off the street. In the background, the kids are in the street, but Roy's car is not seen on the street. The car should have been on the close side of the kids.
Revealing mistake: After the blue sedan turns left, away from Central Park, a long sequence of small 'leaps' begins for both cars as they go through intersections along one long street. Our view changes from inside the sedan, to outside it, inside the coupe, and outside it, back and forth repeatedly. It is painfully obvious this sequence was artificially extended by randomizing the various camera angles, all showing the same few seconds of time, over and over. The best evidence is the red 1973 Lemans that is passed again and again and again. (00:57:35)
Continuity mistake: At the end of the car chase after Buddy crashes into the back of the trailer, the truck driver comes to help him out of the car. In the first shot Buddy is stepping up on the driver's door as the driver helps him, but in the next shot he simply walks forward away from the car as the driver brushes glass off him. He never stepped down from the door to the ground.
Factual error: When both cars in the chase are heading down Central Park West, it cuts to an interior shot of the Grand Ville and the passenger saying "C'mon, step on it." There are buildings passing by his window, which isn't possible, since Central Park would be on that side.
Revealing mistake: When Buddy is honking at the traffic during the car chase, the Ventura's shift lever is in park.
Continuity mistake: As Tony LoBianco is approaching Richard Lynch near the water Lynch sticks his hatchet in a wooden post at shoulder level. After their conversation as LoBianco is walking away, Lynch grabs the hatchet which is now stuck in something at his waist level. He made no attempt during the conversation to move the hatchet.
