What is the test for determining if a buyer of a car is entitled to attorney fees for time expended in litigation?

the monetary charge being made for the time expended are reasonable. If the time expended or the monetary charge being made for the time expended is not reasonable, then the court must award attorney fees in a lesser amount. A prevailing buyer has the burden of "showing that the fees incurred were 'allowable,' were 'reasonably necessary to the conduct of the litigation,' and were 'reasonable in amount.'" (Levy v. Toyota Motor Sales, U.S.A., Inc. (1992) 4 Cal.App.4th 807, 816.)