 Also the Prius broke Japan's annual sales record for a single model for the first time in 20 years, surpassing the Toyota Corolla, which in 1990 set the previous sales record with 300,008 units.The Prius sold 252,528 units in 2011, becoming the best-selling vehicle for the third-consecutive year.This figure includes sales of the Prius α, launched in May 2011, and the Toyota Aqua, launched in December.