WASHINGTON, D.C. -

The National Highway Traffic Administration revealed four separate recalls for a total of more than 520,000 vehicles, campaigns that include models from Volkswagen, Subaru and Saab.

The single largest recall covers specific Saab and Subaru models originally sold or currently registered in Massachusetts, Maryland, Michigan, New Hampshire, New York, Pennsylvania, Vermont, Wisconsin, Connecticut, Delaware, Iowa, Illinois, Indiana, Maine, Minnesota, Missouri, New Jersey, Ohio, West Virginia and the District of Columbia.

The automakers informed NHSTA it is bringing back the Subaru Forester from the 2003 through 2008 model years, the Impreza from the 2002 through 2007 model years and the Saab 9-2X from the 2005 and 2006 model years. These units were manufactured between Sept. 5 and Nov. 26, 2007.

Federal officials believe these units have front lower control arms within the suspension system that may break at the hangar brackets due to corrosion if the hangar bracket is exposed to salty and humid environments such as roads containing snow-melting agents.

They think a broken control arm can result in the loss of control of the vehicle, increasing the risk of a crash.

NHTSA indicated this recall includes 295,123 units.

To rectify the issue, federal officials explained Subaru dealers will inspect the degree of corrosion in the front lower control arms and will either rustproof or replace them for free.

The automaker said it will contact potentially effected owners and commence the repair campaign in November. In the meantime, these owners also can contact Subaru at (800) 782-2783.

Subaru Recalls Legacy & Outback

The other Subaru recall includes a total of 195,080 units — the Legacy and Outback from the 2010 and 2011 model years.

NHTSA contends these vehicles manufactured between Jan. 7, 2010 and May 20 might contain components inside the wiper motor’s bottom cover that may overheat.

Officials fear if these components overheat, they could melt and catch fire.

Like its other recall, Subaru intends to notify owners in November and direct them to franchised dealers for a free repair beginning in November.

These vehicle owners also can contact the automaker at (800) 782-2783.

VW Recalls

The smaller two of the four recalls NHTSA announced include Volkswagen vehicles.

The automaker told NHTSA it is recalling the 2011 Jetta manufactured between March 18, 2010 and Aug. 22 to correct an issue connected with the exhaust system.

Officials said 30,294 units have a stainless steel exhaust tip installed at the port when these VW models arrived in the U.S. They think these tips may extend beyond the original length of the factory-installed exhausting pipes, making it possible for inadvertent contact to occur with a person’s leg.

If the tailpipe is hot when this contact is made, NHTSA thinks a burn could occur.

Volkswagen is asking owners through written notice to bring their vehicles to franchised dealers beginning in November to have the unit inspected and replace these stainless steel exhaust tips for free.

Finally, VW’s other recall stems from the 3,505 Jettas from the 2011 and 2012 model years where these stainless steel exhaust tips were added as accessory equipment.

NHTSA pointed out the part is No. 1K0 071 910 U.

Like when these tips were added at the port, federal officials think a burn could occur. VW said franchised dealers will replace the accessory tips for free starting in November.

If vehicle owners have any questions, they can contact Volkswagen at (800) 822-8987.