The government has opened a preliminary investigation into reports of wheel studs breaking on some 2010 model year Ford Fusion sedans.

The National Highway Traffic Safety Administration says it has received four complaints of wheel studs fracturing on Fusions, which could cause the wheel to separate from the car and the driver to lose control.

The investigation covers about 280,000 vehicles.

All of the complaints involved vehicles with low mileage of 5,000 miles to 11,000 miles. One of the complaints alleges the wheel studs broke on multiple wheels.

The government says there have been no crashes or injuries reported.

Ford says it will fully cooperate with the government on the investigation.