U.S. Motorcycle Sales Reports, Q1 2013
The Motorcycle Industry Council reported a dramatic motorcycle sales decrease in the U.S. for the first quarter of 2013. Motorcycle sales (not including ATVs) were down nearly 15%, including a 22.3% drop in March of 2013.

All segments were down, although off-road motorcycle sales were up very slightly (0.4%) from Q1 of 2012. Cool weather continuing into Spring has been blamed for the slide.
Dual-sport motorcycle sales were down 15% in the quarter and street bike sales also were down 16%. Scooter sales took the biggest hit, down nearly 35% from Q1 of 2012.
Reference:http://www.webbikeworld.com/motorcycle-news/statistics/motorcycle-sales-statistics.htm