N
- Navigator
- See co-driver.
- Nitro
- (drag racing) nitromethane (sometimes incorrectly used to refer to nitrous oxide).
- Nitrous
- (drag racing) refers to Nitrous Oxide systems manufactured by a wide range of companies.
Not classified (often NC)
- A driver was racing at the end of the race, but did not complete the required distance to be classified.
Read more about this topic: Motorsport Terminology