The numbers are also suffering compared to last month, which was the best of the year so far for both vehicles. Looking just at June, though, Leaf sales totaled 2,074 units, down 11.6 percent from a year ago (the EV sold 2,347 units in June 2014). The world's best-selling EV is now down 22.9 percent for the year so far (12,736 in 2014 vs. 9,816 in 2015).
Things are a bit worse over at Chevy, where news about the pretty-much-better-in-all-ways second-gen Volt is coming out with great frequency. Nonetheless, people are still buying the outgoing Volt, snapping up 1,225 units in June. That's down 31.1 percent from the 1,777 sold in June 2014. So far in 2015, the Chevy has sold 5,622 Volts, a drop of 34.7 percent from the 8,615 Volts sold in the first six months of 2014.
As always, we're working on our full tally of green car sales for June and will bring that to you shortly. For now, discuss the sales of these two plug-in pioneers in our Comments, below.