When Blake and Fenderbaum try to run the military car off
the road, the overhead shot of the accident shows them being cut off by a red/gray Dodge Daytona, not the solid red Corvette they were driving.
Right after Private Lyle is given the Congressional Medal of Honor, the limousine switches from an Imperial to a mid-1980s Cadillac Seville.
At the roadside fruit stand, Arnold's racing outfit has
a few watermelon stains on it even before Jackie breaks the melon, but his outfit is perfectly clean when he drags Jackie away at the end of the scene.
The second car to start the race after the Sheik is a dark blue Ferrari Dino. This same car is seen in the background a few seconds later when the Japanese team starts the race.
When the CHP Sergeant is chasing the military car driven by Captain Chaos, the nuns, and JJ McClure, the police car's top emergency lights change from yellow and red in up close shots, to red and blue in long shots. Also, the lights are switched on and strobing when seen in long shots, but not on in up close shots.
The "chimp" is actually an orangutan.
At the beginning the guy in the Mercedes Gull wing says that he now has a 383 Hemi in his car. Chrylser never made the Hemi in the 383 size. They were all Wedge engines.
When JJ an Victor are stopped by the Sheriff, on the Sheriffs hat the badge reads Deputy Sheriff. If he was the actual Sheriff it would read as such. If he was a Deputy h would have to correct them by stating he was a Deputy.
When the Mitsubishi uses the afterburner, the stunt man driving is visible, wearing a fire suit.
During the scene in which the two gangsters are attempting to pick up the Shiek's car in the helicopter, you can clearly see it is doubles used in the shot.
When the cop car does a 360, the stunt driver is visible. He has big sideburns, and the actor supposedly driving does not.
When JJ and Victor are stopped by the Sheriff, JJ, the General, has his CIB, Combat Infantrymans Badge over the right breast pocket on his jacket. It is worn over the left breast pocket.
Right after Jackie Chan/Richard Kiel's car is dropped out of the plane, they're chased by cops. To make them invisible, the car hovers above the ground. As the car is lowering, you can see the shadow of the crane on the ground, lowering it down.
Crewman visible in motorcycle's side mirror during the fight scene at the roadside fruit stand.
As Arnold throws Hymie over the building in the last fight seen, you can see the wires supporting him.
In the fight scene at the Pinto Ranch near the end of the movie, when Arnold (Richard Kiel) throws Hymie (Telly Savalas) into the air, the harness and wires used to carry out the stunt are clearly visible.
Marilu Henner and Shirley MacLaine (the nuns) are wearing wedding bands in several shots.
When Blake is inside the hotel room and Fenderbaum is outside making a move to come it, Blake says "Don't come out, I'll come in." He then goes out.
Several characters refer to the orangutan as a monkey. Orangutans are great apes.