The National Highway Traffic Safety Administration has announced a warning Wednesday about counterfeit airbags in several models.

NHTSA testing has shown some of the bags don't inflate or fail to inflate properly, said the officials.

NHTSA is asking car owners to check a government website, safercar.gov, or call their manufacturer or local dealership to learn if their vehicle model is among those for which counterfeit airbags have been made, officials said.

One industry official says the counterfeit bags have been made to look like airbags made by automakers and usually include a manufacturer's logo.

The bags are marketed to auto body shops as the authentic product.

The following vehicles have been affected in the warning: