During the car wash scene, Haley Webb actually broke the car window when she was pounding on it. The editors left the shot in.
The film's McKinley Speedway accident is similar to a real life disaster: the 1955 Le Mans disaster, a 24 hour endurance race, in which a multi-car collision launched an engine block, hood, and other wreckage into a packed crowd of spectators, killing an estimated 84 people in total. The deaths included spectators being cut in half by the flying hood "like a guillotine," the engine block crushing a swathe through the crowd; an explosion and fire also occurred, which added to the death toll.
The only Final Destination film that does not include Tony Todd, due to his scheduling conflicts with Transformers 2 : La Revanche (2009)
(at around 40 mins) Nick Zano ad-libbed the "donkey punch" line in the sex scene. Zano stated in an interview that David R. Ellis encouraged him to make up outrageous lines in various takes.
(at around 41 mins) When Nick is driving he pulls up to a sign that causes him to have a premonition, the sign is clearly marked Clear Rivers Water. Clear Rivers is a central character in both Destination finale (2000) and Destination finale 2 (2003).