Nissan

There are regular-old recalls, and then there are big recalls.

This recall fits in the big recall category.

Reuters reports four Japanese automakers are recalling 3.4 million vehicles sold around the world because of faulty airbags supplied by the Takata Corp.

The move announced on Thursday is the largest recall ever for airbags made by Takata, the world's second largest supplier of airbags and seatbelts. Shares of Takata tumbled almost 10 percent in Tokyo trading.

The recall is the largest since Toyota pulled back more than 7 million vehicles in October. The scale of the recent safety actions underscore the risk of huge global supply chain problems as automakers increasingly rely on a handful of suppliers for common or similar parts to cut costs, analysts have said.

Here's the problem with the airbags according to Toyota:

The involved vehicles are equipped with front passenger airbag inflators which could have been assembled with improperly manufactured propellant wafers.  Improperly manufactured propellant wafers could cause the inflator to rupture and the front passenger airbag to deploy abnormally in the event of a crash.

The recall affects Toyotas, Hondas, Nissans, and Mazdas manufactured in or after 2000.

Go to these links to find out if your vehicle is under recall:

Honda recalls

Toyota recalls

Nissan recalls

Mazda recalls

Nissan found itself in the spotlight at the North American International Auto Show today.  But not entirely for reasons that would please company executives.

The Insurance Institute for Highway Safety gives the Chevy Volt and the Nissan Leaf top ratings for safety in crash tests.  The results could ease any lingering concerns people might have about the safety of electric cars.

Russ Rader, a spokesman for the Insurance Institute for Highway Safety, says the results show that customers don't have to trade safety for environmentally friendly electric cars.  And the heavy batteries in the cars actually make them safer.

"We can have environmentally friendly, green vehicles and not give up the safety advances that we've made in the bargain… Even though they are small cars in their dimensions, they are considerably heavier than other small cars weighing as much as some midsize or even large cars.  And that is a safety advantage."

Car companies say the huge batteries inside electric cars shut down in the event of a crash to greatly reduce the risk of an electrical fire.

Both the Leaf and the Volt cost more than most similar sized small cars. But Rader says as the price of gas goes up, and the cost of producing the cars goes down, electric cars will become more economical.