16 CASE TITLE: Orosa v CA

Doctrine:The trial court erred when it ordered private respondent to return the subject car or its equivalent considering that petitioner had not yet fully paid the purchase price. To sustain the trial court's decision would amount to unjust enrichment. The Court of Appeals was correct when it instead ordered private respondent to return, not the car itself, but only the amount equivalent to installments actually paid with interest.