2020 got off to a decent start in January and February, but shutdowns in the second half of March had an immediate negative impact.
Ford's F-Series took the top spot on Kelley Blue Book's list of the best-selling new vehicles in the US this year through June by a margin of 50%.
Hyundai Motor Group took the top three spots with its Genesis, Kia, and Hyundai brands for the second year in a row.
The Japanese automaker's North American sales chief made the warning in an email to dealers on Monday, a copy of which was seen by Reuters.
Automotive research firm iSeeCars.com looked at which cars people are most likely to keep for at least 15 years and they are all Japanese.