Porsche has announced a recall for 270 units of their 2012 Cayenne Turbo, 2011/12 Panamera Turbo and 2012 Panamera Turbo S models.

According to Porsche and U.S. National Highway Traffic Safety Administration, the 270 vehicles in question may have been equipped with defective turbine wheel, supplied by Mitsubishi Heavy Industries. Due to a casting issue it’s possible the turbine wheel could fracture, resulting in a decrease in engine performance. The defect could also cause oil to be drawn into the exhaust system, resulting in smoke and the increased likelihood of a fire.

Porsche says it began looking into a possible problem last October after one of its vehicles caught fire in Syria. This was followed by a second fire on an unidentified race track. During its investigation of the cause, Porsche decided to temporarily stop building the potentially affected vehicles in June. Steve Janisse, a Porsche spokesman, said Porsche had since resumed production, with a different alloy used for the turbine wheels. Porsche told the agency it was aware of 37 failures worldwide, including three in the United States, but was not aware of any accidents or injuries.

All affected Porsche vehicles will be recalled to Porsche dealers for a free replacement of the faulty component before the end of the month.