Factual error: Lauda is an Austrian. Yet when his name appears on scoreboards with his country abbreviation, it shows AUS, which is for Australia. AUT is for Austria.
Factual error: As Wendell and Jackie are driving in the car, Jackie turns the radio on to put a hiatus on their discussion. As soon as he turns it on, sound issues forth, but in the 40's radios used vacuum tubes, which required a warm-up period.
Suggested correction: Once the tubes are warmed up, they will tend to stay warm for a period of time even if the radio is turned off. It's possible the radio had been turned on and warmed up before this scene.
Factual error: The bikes used in film are Enfield Classics, which were introduced in 2010 and not available in 1960 or 1947. The engines are visible in 2 scenes (when young Milka meets his sister for first time in Delhi and when Milka rides to see his old home when in Pakistan) and are AVL engines, not the cast iron engines in 1950s bikes.