Nissan sales in January.

Nissan sold just 755 Leaf in the U.S. in January, considerably less than in in the same month last year (1,070 units). The slump is due to the expected arrival of the longer-range version Leaf. Chevrolet saw an increase in sales as 996 Volt were left the lot, up from 542 in January 2015.
greencarreports.com, electriccarsreport.com (sales updates as they come)