"A wheel fracture could cause the circular face of the rim to separate, resulting in a sudden detachment of the wheel and tire from the vehicle," NHTSA said in its problem description.
Last November, federal safety regulators received a complaint from an unnamed consumer of a sudden failure of a 22-inch alloy wheel rim on a 2014 Edge with 8,500 miles on the odometer.
"The right-front corner of the vehicle suddenly dropped while driving, causing the vehicle to drive off the road and into a field," NHTSA said. "The right-front wheel rim was found to have broken in two pieces. The owner said that there was no prior warning or wheel-related problems with the vehicle."
NHTSA has opened a preliminary evaluation into the matter. Such an action sometimes precedes a vehicle recall.
Ford spokeswoman Kelli Felker told Edmunds on Monday that the automaker is cooperating with the investigation.
Edmunds says: The 2014 Ford Edge has not been recalled at this point, so owners don't need to take any action. But if you have an immediate concern, it's best to contact your Ford dealer.