TOKYO -- Toyota has been hit by more than 100 complaints in the United States and Japan about brake problems with the popular Prius hybrid, the latest in a spate of quality troubles for the automaker as it grapples with massive global recalls, according to The Associated Press.

The Japanese company's sales are being battered in the United States - Toyota's biggest market - after recalls of top-selling models to fix a gas pedal that can stick in the depressed position.

The new Prius gas-electric hybrid, which went on sale in Japan and the United States in May 2009, is not part of the recalls that extend to Europe and China, covering nearly 4.5 million vehicles.

The U.S. National Highway Traffic Safety Administration has received about 100 complaints involving the brakes of the new Prius model. Two involved crashes resulting in injuries.