Glossary of Automotive Terms - N

Click on any letter to find automotive-related entries beginning with that letter.


National Association of Stock Car Auto Racing; the governing body which sets the rules and regulations for stock car racing.


National Hot Rod Association

Named Insured

The person or company that is designated as the insured.

National Highway Traffic Safety Administration (NHTSA)

The federal agency that creates safety regulations for cars and trucks, crash-tests them, and analyzes safety-related defects that may require recalls.

Negative Equity

The amount owed on a vehicle loan is greater than its market value.


Failure to use a certain degree of care.

New Car Assessment Program (NCAP)

One of several crash-test programs run by NHTSA. Cars are crashed head-on into a rigid barrier at 35 mph, and instrumented dummies measure crash forces endured by properly restrained occupants. NHTSA assigns each tested vehicle a score indicating the likelihood of moderate, severe or fatal injury.


A mixture of nitric acid and methane which is used to fuel TOP Fuel Dragsters and Funny Cars; is also called nitro or top fuel.

No-Fault Insurance

A type of insurance where both parties in an accident file claims regardless of fault.


The termination of the insurance policy at the expiration date.

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Glossary of Automotive Terms N - Autotrader