Continuity: When the American guy races against the German’s car, the cars in the background have no continuity between the inside and the outside shots for most of the time.
Other: In the beginning of the movie, the radio announcer says it is 74 degrees with a high of 89 degrees expected. The guy directing the oil truck breath is visible and is wearing a winter coat, not very likely at that temperature. People walking the streets are too heavily dressed also.
Continuity: When the cars crash into the oil truck, the body in the car on the far right keeps changing: Head down against the steering wheel (as we later see it in a close-up), head missing and head up and stiff.
Continuity: In the scene where Roy Scheider's character is having his hand treated, the size of the cigarette he is smoking changes, getting larger as the shot leaves him then returns.