The Japan Automobile Dealers Association said Monday that Toyota Motor Corp. sold 22,292 of the Prius cars in June, far more than the 10,915 it sold in May, when a revamped version of the car debuted to clinch the top spot in sales.
June was the third straight month that a gas-electric hybrid topped the Japanese sales charts. The Prius was Japan's No. 2 seller over the first six months of the year, trailing only Honda's Fit compact.
Honda's Insight, a hybrid marketed as a cheaper alternative to the Prius, held the top spot in April but has since slipped, falling to fourth in the June rankings.
The Prius has gotten a boost from a government program that makes hybrids tax-free, providing an effective discount of about $1,500 for buyers. Japanese consumers have also been increasingly drawn to new products seen as environmentally friendly, which also include solar panels and low-energy TVs.