Not-so-hot wheels

The answer to the crossword clue “Not-so-hot wheels is LEMON” is the word “lemon.” In this context, “wheels” is a slang term for a car, and “not-so-hot” means that the car is not very good or desirable. “Lemon” is often used to describe a faulty or defective car that has significant issues or malfunctions. Therefore, the answer to this crossword clue is “lemon,” which describes a car that is not in good condition and may be a poor choice for a buyer.