The National Highway Traffic Safety Administration (NHTSA) has issued a recall on certain 2011 and 2012 Mercedes-Benz models due to a faulty fuel filter.

The affected models include only the diesel versions of the 2011 Mercedes-Benz E-Class and 2012 Mercedes-Benz S-Class sedans, as well as the diesel 2011 Mercedes-Benz ML-Class, GL-Class and R-Class.

For the E-Class, it’s those models built from July 2010 through to February 2011, while for the S-Class it’s all 2012 models.

Additionally, for the R-Class, it’s those models built from April 2010 through April 2011, while for the ML-Class it’s those built from January 2010 through March 2011 and the GL-Class models built from March 2010 through March 2011.

In total there are some 6,872 vehicles affected.

According to the NHTSA, the diesel fuel filter may leak from the area around the heating component and fuel may end up on the road, increasing the potential of a crash. Additionally, the leaking fuel may catch on fire in the presence of an ignition source.

Mercedes-Benz dealers across the country will inspect and replace the fuel filters free of charge if necessary.

If you own one of the affected vehicles, you can contact the NHTSA at 1-888-327-4236 (reference recall campaign number 11V496000) or Mercedes-Benz at 1-800-367-6372.

Note, this is the second time that Mercedes-Benz has been forced to issue a recall on its diesel models. Around the same time last year the automaker recalled its 2011 model year diesels, also due to the fuel filters leaking.