A number of Porsche Panamera sedan and Cayenne SUV Turbo models made it to the National Highway Traffic Safety Administration’s (NHTSA) recall list because the turbine wheel of the turbocharger in those vehicles may fracture due to a casting defect.

“If the shaft fractures, oil may be drawn into the exhaust system, resulting in smoke and the increased risk of a fire,” the safety agency said.

Porsche noted that it is not aware of any accidents or injuries resulting from the defect.

The recall affects a total of 270 examples of the 2011-2012MY Panamera Turbo sedans, 2012MY Panamera Turbo S and the 2012MY Cayenne Turbo SUV sold in the United States.

Under the recall, Porsche dealers will replace the turbine wheels free of charge. The recall is expected to begin before the end of July.

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