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: Right as the race starts, both cars peel out, making smoke from the tires boil up and both cars begin moving, leaving skid marks on the road. But the camera changes to a different angle as they are passing flag girl, Marisha, and suddenly the smoke and tire marks are gone.
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.
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.