Mercedes-Benz has issued a recall for E, GL, M, and R Class vehicles from the 2011 model year. According to a bulletin from the National Highway Transportation Safety Administration, the fuel filter O-ring on those models may have been improperly lubricated, which could cause some unpleasant leakage.
The NHTSA bulletin explains the safety hazard : "Diesel fuel may be deposited on roads and making [sic] those roads slippery, increasing the potential for a crash." That's interesting for a couple of reasons. First, there's no mention of the recall affecting only diesel engines elsewhere in the notice. (A Mercedes-Benz customer care representative has confirmed that the recall applies to all models.) And second, the danger posed by the flaw seems to affect other drivers rather than the owners of the Mercedes-Benz vehicles.
Since all of the affected vehicles come from the 2011 model year, this recall isn't especially big -- just under 2,300 units at the moment. Mercedes-Benz says that dealers will replace the fuel filters free of charge.
If you own one of the affected vehicles, call your local dealer, or give Mercedes-Benz a ring at 800-367-6372. Alternately, you can call the NHTSA at 888-327-4236 and reference recall campaign number 10V540000.