In general, it is not recommended to trade in a car with bad brakes. If the brakes are not functioning properly, the car may not be safe to drive, which could put you and other drivers at risk.
Additionally, if you trade in a car with bad brakes, you may receive a lower trade-in value, as the dealer will need to spend money to fix the brakes before reselling the car.
It is important to address any brake issues before trading in a car. If you are unsure about the condition of your car's brakes, you should have them inspected by a qualified mechanic. If repairs are needed, it is best to have them done before trading in the car.
This can help ensure that you receive the best possible trade-in value and can help prevent any safety issues for the next owner of the car.