The amount, agreed in September but kept confidential, was released by a lawyer for the dealership that lent the Lexus to the family.
Toyota, which did not admit or deny liability in the settlement, said in a statement it was disappointed the amount had been made public.
The crash triggered a series of recalls involving millions of Toyota models. The car maker said in its statement: "As is common in these cases, these parties
agreed to keep the amount confidential, in part to protect the families from unwanted solicitations and to allow them to move on from this difficult period."
The accident which killed off-duty California Highway Patrol Officer Mark Saylor, 45, his wife, their daughter and Mr Saylor's brother-in-law happened in August 2009.
