Paul A. Eisenstein is a CNBC contributor and the publisher of thedetroitbureau.com. He has over 30 years of experience covering the auto industry.
Critics of geographic recalls say they are irresponsible and ignore many realities of the marketplace, including the mobility of drivers.
With gas prices down, analysts say it will be even more difficult to persuade buyers to opt for vehicles that plug in rather than tank up.
A NHTSA spokesperson said a further increase could follow in its massive air bag recall, noting, "The agency has an open investigation going."
Used car prices are tumbling sharply and likely to slide through 2016, according to pricing trends.