The character voices in Nicktoons Racing are all existing clips from their shows as opposed to original voice work - however, multiple character voice lines, particularly those of Angelica, Darwin, and Stimpy, have background music or sound effects from the original scenes left intact instead of using the original masters or digitally removing the noise. Additionally, one of Arnold's voice lines is from Harold and one of Tommy's voice lines is from Chuckie.

Inside the PC version's files is an unused image of a badger wearing a green suit. This might have a relation to Jeff Badger, who is listed as "Morale Consultant" in the credits.

The Hasbro Interactive logo that plays in the PC version is desynchronized in both the video being slower than normal, and the audio starting later.