The U.S. auto safety watchdog, toughening its stance against manufacturer defects, announced on Sunday a record $105 million in fines against Fiat Chrysler Automobiles NV (FCHA.MI) over lapses in safety recalls involving millions of vehicles. The Italian-U.S. automaker’s consent agreement with the National Highway Traffic Safety Administration contains an unprecedented buyback option covering hundreds of thousands of vehicles, including more than 1 million Jeep sport utility vehicles, whose owners can receive a trade-in or a financial incentive to get their vehicles repaired.