In the 3rd round, the announcer describes the contest as "mano y mano". That means "hand and hand". It's an all-too-common mistake, thinking that the real expression (mano a mano) means "man against man"; it doesn't. It means "hand to hand" combat.
In Stage 2 of the race right before The Dreadnought gets destroyed, you see from the front view, Frank's car on the left & Joe's on the right. Yet the when the close up clip cuts to the 2 cars activating the Death Head trap together, Frank & Joe's cars have suddenly switch opposite sides for a brief moment before the shot cuts back to the forward shot of Frank's & Joe's cars back in their original positions. The shot is obviously mirrored.
The 1970 Chevrolet Chevelle SS that Martinez arrives in at the end of the movie has the wheels turned all the way to the right. when she gets out of the car, the wheels are turned all the way to the left.
Right after Frank rips the picture with his daughter and starts talking to Coach, there is a shot from behind coach where he is wearing a Terminal Prison jacket, even though every other shot just has him in a blue shirt.
In the last race Machine Gun Joe' and Jensen Ames' head lights change. One shot Jensen Ames head lights are out while Machine Gun Joe has-his head lights on and vice versa. also At one shot you see that Machine Gun Joe has one head light out and in another shot he has both head lights on same with Jensen Ames head lights
At the end of the second stage fight, when the Dreadnought strikes against a death head, the upper section comes off and gets jerked ahead. There is a side view first followed by a front view. The rear part of this upper section seems to go up inexplicably fast, in the front view after considering side view.
When Jensen first asks lists how many people Frank has killed he says 20, but at the end of stage 2, when it has the lists of the drivers and the ones who are dead, it says Frankenstein only killed 15 and his car is named the monster on that list. While all the other cars have their actually names, Frank's car is a Ford Mustang.
When Pachenko flips his car after hitting the steel support you can see that the car has 3 Racing tires and 1 regular as well as the rig used to set it up but in the shot after the car returns to 4 racing slicks.
Throughout the Stage 2 part of the race, Hennessey is shown to be wearing a black turtle neck and grey jacket. Yet when the dreadnought crashes, the reaction shot of her has her wearing a black jacket over a blue collared shirt.
In the opening shots of the movie's first race, the front zoomed view of Frankeinstein's car show the machine guns mounted on the driver's side of the vehicle, where as a few frames later when seen from further away, the guns are mounted on the passenger's side.
At the end of "Stage 2" seconds before the Dreadnought smashes into the Death Head Trap. A close up shot of the Death Head rising from the ground clearly shows the metal frame & spikes only of the trap. Yet, the following shots show when the Dreadnought smashes into the Death Head Trap, there's suddenly a Metal box like shed within the metal frame of the Death Head Trap. But there clearly wasn't one there before after the Trap had been activated.
At the introduction Coach tells Frank that the back protection plate AKA Tombstone is 6" thick solid steel. There are 4 plates 1.5" thick each and about 40", 50", 60" and 70" by about 48" tall. That is about 1972 kilogram or 4340 lbs. of steel. That would make the car so back heavy that at the first hitting of any bump the front of the car would go up and make controlling impossible. Besides that it will also be so heavy that the car won't be fit for race.
The front firing weapons fitted to Pachenko's car are WW-II vintage German MG-34 7.92mm machine guns and Russian PPSh-41 7.62mm submachine guns; the former have Gurttrommel 34 drum magazines each containing a 50 round belt, while the latter can take either a 71 round drum magazine, or a 36 round curved stack magazine. That makes them unsuitable for prolonged firing, as they lack sufficient ammunition and their location also makes them impossible to reload during a race. Plus, they wouldn't even make a dent on the "tombstone". Also, the flexible navigator operated machine gun on Carson's car is manually charged and fired, so the activation/kill switch mechanism for it would have to block either the charger or the trigger, but no such thing is visible.
Sections 2204 and 2207 of Title 44 of the US Criminal Code, as seen in the legalese in parentheses at the end of the disclaimer preceding Death Race ("Title 44, US Criminal Code, Section 2204 and 2207"), actually are "Restrictions on access to Presidential records", and "Vice-Presidential records", respectively.
When Machine Gun Joe says "thou shall not kill" while cutting his own face, his mouth movements suggest he pronounces each word in quick succession. However, the word "kill" is significantly delayed on the soundtrack for dramatic effect (a slight echo is also applied to it). Confusing, but clearly a creative decision.
During the intro to stage 3, we see the close up of Frank snapping Pachenko's neck then the camera changes to a wide shot of Frank and a dead Pachenko. This is how the audience viewing Death Race saw it, yet since it is included in the preview to stage 3 the in-movie audience sees, they see a close up shot of Frank killing Pachenko, then a wide shot which shows there was no camera in place to take the earlier shot.
There are copious amounts of mainline railroad equipment all around the race track area including numerous obviously still in use freight cars (a lot of them Canadian from the clearly visible markings) yet there is no railroad connection to the island, only the narrow road bridge.