Goofs

Around 1:40h, Ferrari and Maserati cars are racing side by side. It's clearly seen Ferrari's radiator grill is bent in first shot, next, it looks like new.

During the race, Collins comes in for a pit stop and eats half a banana. The other half gets passed around until one of the crew members asks a kid "Do you want Collins' banana?" You see the kid happily take the banana while Enzo is talking to Collins. In the wide shot of Collins driving away from the pit stop, you see the kid taking the banana for the second time.

In Italian, the word "driver" would be used for drivers of taxis or limousines, not for someone who drives on a race track. The word for competition racers would be "pilot". In an early scene, a newspaper headline uses the proper Italian word for pilot referring to a racer. This error was likely intentional so as not to confuse English-speaking audiences.

In reality Maserati driver Jean Behra did not start the Mille Miglia after breaking his wrist in a practice crash beforehand.

In the movie, Enzo Ferrari drives a Peugeot 403. But in realty, he drove Peugeot's 404 and 504.

The dashboard of Alfonso de Portago's 4.1-liter Tipo 335 Ferrari is seen over his left shoulder before the crash. The large center gauge of the tachometer shows the needle at 10 o'clock which indicates 0 rpm. The Tipo 335 engine hit maximum power of 390 hp at 7400 rpm and had a top speed of around 180 mph. Drivers would reach speeds of around 150 mph in this stretch between Goito and Guidizzolo, so it likely would have been running at least 5000 rpm which is at about the 4 o'clock position on the dial, not at 10 o'clock as shown.

There are two occasions where characters watch live TV coverage of events, something that wouldn't happen in 1957 as such sporting events would be covered by newsreel not live TV.

In the first scene Enzo watches his cars racing live in a Grand Prix, and in the second his wife Laura watches live coverage of the post Mille Miglia press conference.

Enzo says "win on Sunday, sell on Monday" in 1957. The saying was not coined until the 1960's by American car dealer Bob Tasca.

When Enzo Ferrari is buying flowers from the street shop, the scene is taken overhead, and an LED train sign is shown clearly on the top center of the screen. The first LED light for train signals was implemented long time after 1957.

The bank clerk asks Laura how the name 'De Portago' is spelled, which doesn't make sense. Being Italian he could write it phonetically without any difficulty.