Federal regulators have opened an investigation into complaints that power steering systems in the Chevrolet Cobalt can fail, making it more difficult to control the car.

The National Highway Traffic Safety Administration says there are 1,132 complaints about the Cobalt's electric power steering, including reports of eleven accidents and one injury.

The preliminary review covers about 905,000 Cobalts in the model years from 2005 to 2009.

A majority of the complaints have come in the past six months. Some drivers said they couldn't stay in their traffic lane when steering became difficult.

The Cobalt is made by General Motors.

The company said in a statement that the NHTSA review is the first step in an investigation, and that it will answer questions from the safety agency. After that step, the case will either move to an engineering analysis or it will be closed, GM said.

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