(Reuters) -The U.S. National Highway Traffic Safety Administration said on Monday it has opened a preliminary evaluation into 91,856 Jaguar Land Rover vehicles over the risk of faulty front steering knuckles.

The auto safety agency received reports that one or both of the aluminum front steering knuckles, which connect the front tires to crucial components such as the brake assembly, had fractured in the potentially impacted vehicles.

The issue may increase the risk of a crash, it said, adding that the probe would help determine its scope, severity, and origin.

The evaluation focuses on the 2014-2017 models of the Range Rover Sport manufactured by JLR's North America unit.

Jaguar Land Rover, which is based in the U.K., is a wholly owned subsidiary of India's Tata Motors.