According to a report from Autoweek, Volkswagen has plans in place to retrofit a quarter of a million 2009-2012 model-year TDI-engined cars with a system that will prevent misfueling with gasoline instead of diesel. In a notice sent out to VW dealers, the company specified that affected models will include the 2009-2012 Jetta and Jetta Sportwagen TDI, as well as 2010-2012 Golf TDI models.

Volkswagen claims that the increased popularity of TDI diesel models has resulted in more incidents of damaging and potentially very costly misfueling mishaps. To address the issue, the company will front the cash for dealers to retrofit a fuel filler neck cap that can recognize the smaller nozzle of a gasoline pump and keep the fuel tank gate closed.

Autoweek also reports that the move might be slightly defensive in nature; VW has blamed misfueling on the wave of high-pressure fuel pump failures that has recently been the subject of an investigation by The National Highway Traffic Safety Administration.