The government will look into 38 complaints filed between 2007 and 2009 over sudden acceleration of Toyota Motor Corp. vehicles in Japan, transport minister Seiji Maehara said Wednesday.

The domestic scrutiny of the auto giant comes as the company's president, Akio Toyoda, faces tough questioning at a hearing by the U.S. House of Representatives Committee on Oversight and Government Reform in Washington later Wednesday. The hearing follows another congressional session on a recent spate of recalls by the automaker held a day earlier.

During the three years, the Land, Infrastructure, Transport and Tourism Ministry received 134 complaints on acceleration, of which Toyota vehicles made up 28.3 percent.