General Motors Corp. and Chrysler, which have requested as much as $21.6 billion in additional government aid, may need "considerably" more than that, said Steven Rattner, the Treasury's chief auto advisor.
"It could be considerably higher, I won't deny that," Rattner said in an interview on Bloomberg Television.
Rattner and President Obama's auto task force are assessing proposals from GM and Chrysler and deciding whether to recommend additional aid, which would help the carmakers avoid filing for bankruptcy. Rattner said the task force would give its "sense of direction" before March 31. Chrysler and GM have received $17.4 billion since December and requested more last month.