Beware of car dealer ads promising to pay off the loan on your trade-in.

The Federal Trade Commission has targeted five car dealers in four states in a first-of-its-kind case.

Regulators say the dealers deceived consumers by telling them they'd pay off their loans no matter what was owed on the vehicles.

Instead, the balance was often times rolled over right into the new car loan.

Settlements with the car dealers in South Dakota, North Carolina, Connecticut and West Virginia will force them to pull the ads.