Plug-in vehicles had a strong month.
Both the Toyota Prius PHEV and the Chevy Volt turned in their best-ever monthly sales, and the Volt has set incremental records the last three months straight, with consistent sales of just under 3,000 units.
While incentives on the Nissan Leaf led to the second-best-ever performance. The Ford C-Max Energi (plug-in hybrid) debuted with 144 sales. These vehicles were 0.65 percent of total North American sales, again a best-ever performance.