WASHINGTON (AP) — Consumer banking giant Wells Fargo agreed to pay $3.7 billion to settle charges that it harmed customers by charging illegal fees and interest on auto loans and mortgages, as well as incorrectly applying overdraft fees against savings and checking accounts.

Wells was ordered to repay $2 billion to consumers by the Consumer Financial Protection Bureau, which also enacted a $1.7 billion penalty against the San Francisco bank Tuesday. It's the largest fine ever leveled against a bank by the CFPB and the largest yet against Wells, which has spent years trying to rehabilitate its...