SACO — The owner of Prime Motor Group has sold Kia and Nissan car dealerships on Route 1 in Saco to Bill Waldron, owner of Portland Volvo.

Ira Rosenberg, Prime’s owner, said the Nissan deal already closed, and he expects the Kia dealership will officially transfer to Waldron in the next few days.

Rosenberg declined to discuss the financials of the deal. Waldron, who also bought Jolly John Auto City last year, could not be reached for comment.

Rosenberg, 74, said his age was part of the reason he sold the dealerships.

“I am going to be 75. I am too old to have too many dealerships,” said Rosenberg.

He added that he enjoyed dealing with Waldron during the sale.

“I want to impress how great it was doing business with Bill Waldron,” said Rosenberg. “I wish them lots of luck with the new franchises.”

Prime Motor Group still sells cars made by Toyota, Hyundai, Mercedes-Benz, Ford, Honda and Volkswagen.