Toyota's back. General Motors held the number-one spot as the world's largest automaker in 2011. Toyota is now number one, having pushed it back to No. 2 in the first quarter. Toyota, which was the world’s largest automaker from 2008 to 2010, sold the most cars and trucks in the world in the first three months of the year as it made up for production lost to natural disasters in Asia last year. It sold 2.49 million vehicles worldwide from January through March, vs. 2.28 million for GM.