Gimme a Break! (1981)

S5E10 Nell's New Car

Nell discovers that Addy is selling her car and is eager to be the first to buy it. However, Angie's sister has already claimed it. Determined, Nell persuades her to reconsider. When Nell takes the car for a test drive, it unexpectedly breaks down, prompting her to demand a refund from Addy. Initially resistant, Addy eventually relents when she learns that she'll also receive a refund.