TOKYO: Toyota Motor Corp has been hit by over 100 complaints in the US 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.

The Japanese company's sales are being battered in the US - 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 US in May 2009, is not part of the recalls that extend to Europe and China, covering nearly 4.5 million vehicles.