Airbag recalls from major automakers are beginning to confuse consumers. And critics say the U.S. National Highway Traffic Safety Administration should force automakers to simply recall all cars that have defective air bag inflators. 

This week, Ford and Honda are expanding previously announced regional recalls. For the same problem, Chrysler is expanding its recall to include passenger-side air bags of some pickup trucks in high-humidity states. Consumers are left wondering what, for example, happens if someone purchases a car in Florida and then sells it to someone who takes it to Minnesota?

“There's no doubt consumers don’t know whether their cars are affected. I hear from them all the time,” said Clarence Ditlow, head of the Washington, D.C.-based Center for Auto Safety. “Only a nationwide recall will straighten that out. And only a driver side and passenger side nationwide recall will straighten that out.” Ditlow says he's heard from returning enlisted soldiers who have bought cars affected by the recall in one part of the country and are deployed to another region -- they don't know if their cars are included in a recall or not. 

* SCROLL TO BOTTOM FOR FULL LIST OF AFFECTED VEHICLES *

Adding to widespread misunderstanding of the problems, Takata, the manufacturer of the defective air bags, insists that recalls should focus on cars in high-humidity regions where moisture can penetrate the inflator and alter the ammonium-nitrate-based chemical formula used to rapidly inflate the bag. Takata holds about 20 percent of the global air bag market, is Honda’s biggest air bag supplier and is the only manufacturer that uses the caustic chemical formula in its inflators, according to Bloomberg.

The defect in 17 million vehicles worldwide has been linked to at least 139 injuries, including more than 30 in the U.S. Five confirmed deaths, four in the U.S. and one in Malaysia, have been linked to the flaw.

Ford said Wednesday it would expand a previously announced region-based recall to include all affected 2004-2005 model year Ford Ranger pickup trucks and 2005-2006 Ford GT sports cars nationwide. The Dearborn, Michigan, automaker – which says 98,000 of its vehicles contain the defect – initially announced a regional recall in June of some Rangers, GTs and 2005-2008 Mustangs sold or registered in Florida, Puerto Rico, Hawaii and the U.S. Virgin Islands.

Honda made a similar announcement Wednesday to expand nationwide a previously reported regional recall. About 10 million vehicles, mostly Honda vehicles, have been recalled in the U.S. since 2008, including about 7.8 million so far this year.

Chrysler in a separate announcement on Wednesday said it would voluntarily replace passenger-side Takata air bag inflators in about 149,000 model-year 2003 Ram pickups, including the larger 2500 and 3500 heavy-duty trucks that were sold or registered in Alabama, Florida, Georgia, Hawaii, Louisiana, Mississippi, Texas and U.S. territories.

Chrysler says it is continuing to study the air bag inflator issue “with great urgency,” but the NHTSA says the automaker needs to include more vehicles in its regional recall.

“Chrysler’s latest recall is insufficient, doesn’t meet our demands, and fails to include all inflators covered by Takata's defect information report,” the agency said in a statement to Automotive News.

The NHTSA also has taken issue with Takata’s resistance to complying with its demand to expand its recall to cover all affected cars in the country and is considering imposing a fine against the Japanese parts manufacturer. In Senate testimony last week, Hiroshi Shimizu, Takata’s senior vice president of global quality assurance, insisted that the hot and humid regions “must be the priority for the replacement of the suspect inflators.”

For further information, vehicle owners can go to the manufacturers; consumer websites or NHTSA’s Vehicle-Identification-Number-lookup tool. The NHTSA currently (as of Dec. 2, 2014) lists the following vehicles that contain the faulty Takata air bags.

Honda/Acura: 5,051,364 potentially affected vehicles

2001 – 2007 Honda Accord

2001 – 2005 Honda Civic

2002 – 2006 Honda CR-V

2003 – 2011 Honda Element

2002 – 2004 Honda Odyssey

2003 – 2007 Honda Pilot

2006 – Honda Ridgeline

2003 – 2006 Acura MDX

2002 – 2003 Acura TL/CL

2005 – Acura RL

Toyota/Lexus: 877,000 potentially affected vehicles

2002 – 2005 Lexus SC430

2002 – 2005 Toyota Corolla

2003 – 2005 Toyota Matrix

2002 – 2005 Toyota Sequoia

2003 – 2005 Toyota Tundra

Nissan/Infiniti: 717,364 potentially affected vehicles

2001 – 2003 Nissan Maxima

2001 – 2004 Nissan Pathfinder

2002 – 2006 Nissan Sentra

2001 – 2004 Infiniti I30/I35

2002 – 2003 Infiniti QX4

2003 – 2005 Infiniti FX35/FX45

2006 Infiniti M35/M45

BMW: 627,615 potentially affected vehicles

2000 – 2005 3 Series Sedan

2000 – 2006 3 Series Coupe

2000 – 2005 3 Series Sports Wagon

2000 – 2006 3 Series Convertible

2001 – 2006 M3 Coupe

2001 – 2006 M3 Convertible

Chrysler/Dodge: 371,309 potentially affected vehicles

2003 – 2008 Dodge Ram 1500

2005 – 2008 Dodge Ram 2500

2006 – 2008 Dodge Ram 3500

2006 – 2008 Dodge Ram 4500

2008 – Dodge Ram 5500

2005 – 2008 Dodge Durango

2005 – 2008 Dodge Dakota

2005 – 2008 Chrysler 300

2007 – 2008 Chrysler Aspen

Mazda: 64,872 potentially affected vehicles

2003 – 2007 Mazda6

2006 – 2007 MazdaSpeed6

2004 – 2008 Mazda RX-8

2004 – 2005 MPV

2004 – B-Series Truck

Ford: 98,000 potentially affected vehicles (est.)

2004 – 2005 Ranger

2005 – 2006 GT

2005 – 2008 Mustang

Subaru: 17,516 potentially affected vehicles

2003 – 2005 Baja

2003 – 2005 Legacy

2003 – 2005 Outback

2004 – 2005 Impreza

2004 – 2005 Impreza WRX/STI

Mitsubishi: 11,985 potentially affected vehicles

2004 – 2005 Lancer

2006 – 2007 Raider

General Motors: unknown number of potentially affected vehicles 

2003 – 2005 Pontiac Vibe

2005 – Saab 9-2X