None.

A few mild crashes during racing scenes.

A boy hits K1 in the back with a spiked club.

One scene shows a car snorting power out of the parking lot during a race.

None, unless you count with the fact the animation is utterly dreadful, the writing and storytelling are awfully dull, and the fact the film is ripping off Disney/Pixar's "Cars" franchise despite the director claiming the opposite.