Sunday marked the sixth consecutive night of demonstrations in at least 75 cities across the country. Several U.S. auto dealerships on the West Coast and elsewhere suffered damages amid the conflict.

While sales dropped sharply year-over-year, deliveries were up about 30 percent from April.

Plans to bring the Zotye brand to the U.S. have been iced, leaving money-losing Chery as the only Chinese automaker with any near-term prospects.

A key source of sales for some big automakers is disappearing. ALG projected a 78 percent drop in U.S. fleet sales for May.