Fat Albert and the Cosby Kids (1972)

The gang's friend Richard has a tendency to "borrow" his uncle's car and gives them joyrides throughout town. He then takes a neighbor's car out while he's away, giving the gang another joyride. However, this leads to danger as their ride gets out of control and the car winds up in a lake. Fat Albert arrives in the nick of time to rescue them. As a result, Richard has to face the consequences with the police, his parents, and the neighbor who owns the car.