Plot hole: When Ben Affleck is meeting with the man who changes Samuel Jackson's credit record, the man remarks that Samuel Jackson should not have told Ben Affleck that he was in insurance. Samuel Jackson never told Ben Affleck that he was in insurance.
Continuity mistake: In the daytime restaurant scene between Ben Affleck and his wife, the wife tells Ben Affleck that they are going to dinner that evening with two friends, one of whom is Carl and other a woman. However, later that evening the dinner date is with the wife's parents. The wife's father's name is Steve, not Carl. (00:58:15)
Factual error: When Sam Jackson removes the lug nuts from Ben Affleck's Mercedes, Ben's character continues to drive before the wheel comes off. All Mercedes models use wheel lug bolts and once removed, the wheel immediately falls of the hub. (01:00:15)
Factual error: When Jackson removes the wheel bolts from Affleck's car and Affleck crashes, the airbags on the Mercedes come out but when Affleck is out of the car the airbags are still fully blown. When airbags are activated in reality they inflate then immediately deflate, the idea being that you hit them as they deflate, cushioning the blow.
Continuity mistake: After Gavin's second accident on the FDR there is a cut on his nose and another on his cheek. The characteristics - such as severity, size and position - of these cuts keep changing in the following scenes. (01:02:00)
Plot hole: Doyle tells Gavin that it will take 30 minutes to get to his bank. Then Gavin's wife calls and tells him to meet her In 10 minutes. Doyle gets to the bank before Gavin Meets his wife. (00:50:35)
Continuity mistake: In the courtroom, Gavin puts down two files. One orange, one blue. In the next shot the files are black and blue. The next time they're in the courtroom and Terry mentions Gavin's accident the folder is orange again then gone altogether.
Continuity mistake: After Ben Affleck sets the sprinklers off in his office, his suit is drenched. As he exits the building minutes later, it's completely dry. (00:46:30 - 00:48:00)
Factual error: Michelle tells Gavin over the phone that it's Good Friday when he asks her what day it is. When Gavin comes back to the office after Doyle's arrest, a radio is on reporting the Dow and NASDAQ closes for the day. The market is not open on Good Friday.
Deliberate mistake: After Doyle and Gavin agree to meet at the court (right before Gavin's second highway crash), there is a scene of a taxi driving on the left side of the road. This shot was obviously flipped, as everyone in the U.S. drives on the right-hand side of the road. (01:00:15)
Continuity mistake: When Ben Affleck is in court, he is playing with his wedding ring - the very next shot is him with his hands tother.
Other mistake: At the end of the film when Samuel L Jackson's character is standing looking across at his family, it is raining on his side but not on the other side of the road.
Continuity mistake: When the kid on the bike throws shredded paper in Affleck's hands, the paper is in the kid's left hand. Then when he throws it in Affleck's hand, it is in his right.
Revealing mistake: On the FDR, when Doyle tries to thumb a ride in the rain, the only vehicle using wipers in the 'downpour' is the one that passes Doyle. All the other vehicles in the background driving northbound on the dry FDR are not, and in fact driving beyond the reach of the crew's artificial rain in the foreground. (00:10:30)
Visible crew/equipment: Just after Gavin and Doyle's collision, when Gavin is on his cell and says, "Tell them I'm on the steps," in the next shot as the car passes behind Doyle and Gavin, the boom and mic are reflected on the car's surface. (00:09:15)
Continuity mistake: When Doyle's car hits the sand-filled barrels, the front tire has a rather small hubcap and the back tire's hubcap is a different style and quite larger. A moment later, when Doyle inspects the damage to the car, in the close-up the front tire now sports an identical hubcap to the back tire. (00:08:20)
Visible crew/equipment: After Gavin's second accident on the FDR he walks toward Doyle's disabled car, and as a green van drives past Gavin, the camera, cameraman and two other crewmembers (one wearing a baseball cap) are reflected on the van's surface. (01:02:20)
Continuity mistake: Just as Gavin's and Doyle's cars collide on the FDR, the right (viewer's left) side-view mirror on Doyle's car breaks off, but is then intact and broken again in following shots. (00:08:10)
Continuity mistake: When Doyle and Gavin collide on the FDR, Doyle's car hits the sand-filled barrels and ends up at the center of the chevron stripes on the median island, as seen in the overhead shot. When Gavin has the second accident, he walks over to Doyle's disabled car which is now at the right of the chevron stripes, closer to the exit ramp. (00:08:20 - 01:02:50)
Continuity mistake: During the events on the first day you see Ben Affleck wearing laced up shoes and then as he is stepping out of the car in the rain, he is wearing loafers. Where did the laced up shoes go?
