Federal regulators are investigating complaints of engine stalling on certain Toyota Corolla and Matrix models, the latest in a series of safety issues faced by the Japanese automaker.

The National Highway Traffic Safety Administration says it has received 26 complaints of engine stalling on 2006 Corollas and Matrixes equipped with 1ZZ-FE engines. Some complaints say vehicles stall randomly while driving, including some on highways and in intersections.

Toyota spokesman John Hanson says Toyota is complying with the government's request for information from the automaker.

The investigation follows Toyota's largest recall ever earlier this year in which it agreed to replace the gas pedals on 4 million vehicles.