Ocasek was pronounced dead at his townhouse after someone called 911 about 4 p.m. EDT (2000 GMT) to report that he was unresponsive, a New York Police Department spokesman said.
Regardless, this has not been confirmed and the cause of death is still unknown to the public or perhaps everyone at this point.
"It's quite unusual to be here without him", Ocasek said.
Canadian star Bryan Adams wrote: "RIP Ric Ocasek". He worked with Bad Brains, Suicide, D Generation, No Doubt, Motion City Soundtrack and oversaw Weezer's self-titled "blue" debut album as well as their 2001 self-titled "green" album and 2014's Everything Will Be Alright in the End. The news came shortly after The Cars were inducted into the Rock & Roll Hall of Fame.
Ocasek, born Richard Theodore Otcasek in Baltimore in 1944, met bass player and future band mate Benjamin Orr after moving to Cleveland for high school.
He is survived by six sons, two from each of his three marriages.
Ocasek had recently placed the home where he was found on the market after he and Czech supermodel Porizkova announced their split in May 2018. In the 1970s they relocated to Boston and formed bands including the folk-rock Milkwood and also played as an acoustic duo before finding their calling when they created The Cars.