Revealing mistake: When Marisha waves the flags to start the race, you can see the road behind her is clean. But once the cars get past her and it cuts to a view from in front of them, suddenly there are skid marks on the road in the lane where the '89 Batmobile is. The marks are not lined up with the car at that moment, so they are from previous takes of the race.
Revealing mistake: After the race, Marisha, Damian, and Andy go to the guy with the laptops to see the photo finish. As the camera shows the two laptops, you can see they are not even turned on, the screens being totally black, only showing the reflections of the things around it. It cuts to a different closer angle showing the guy typing on it, yet the screen is still totally blank.
Continuity mistake: Andy begins his introduction of the '89 Batmobile and first talks about how grenades come out of the wheels. The camera zooms in on the wheel and on the bat shaped hubcap, which has the ears pointed diagonally up towards the front of the car. But when the camera cuts back again as Andy moves to point to the Side Mounted Disk Launcher, the hubcap now has the bat's ears facing diagonally down towards the front of the car.
Continuity mistake: After Marisha Ray introduces Damian Beurer and Andy Liegl, the camera cuts back to her with the two guys standing next to her, and Damian is holding up what looks like brass knuckles in his hand, but shaped like a bat-o-rang. Camera cuts to a close up of his face as he talks about the '66 Batmobile, and you can see his arms moving pointing to it, not having a chance to remove the bat knuckles. But when it cuts back, suddenly the bat knuckles have vanished.
Continuity mistake: After the race starts, one shot shows the '89 pulling ahead of the '66 by almost a full car length. The shot cuts to a view from the right side of the '89 for only a split second, then shows another frontal view of the two Batmobiles and suddenly the '89 and '66 are even with each other.
Continuity mistake: During the entire drag race, the '89 Batmobile is in the right lane, and the '66 is in the left lane. This formation is the same when they cross the finish line. But later when they are looking at the "Slo Mo" of the crossing of the finish line, the '66 is now in the right lane and the '89 in the left.