The requirement to provide a Spanish Retail Installment Sales Contracts depends on the laws and regulations in the particular jurisdiction where the transaction is taking place. In some states or regions with large Spanish-speaking populations, like California, it may be required by law to provide a translation of the vehicle sales contract, as well as other documents provided to the customer if the negotiations were conducted exclusively or primarily in Spanish. It's best to check with local authorities or seek legal advice in your state to determine what translations of documents are required for specific transactions.

In California, under Civil Code section 1632, the dealership is required to provide Spanish translations of specific documents related to the sale if the negotiations were conducted primarily in the Spanish language. It is also important to mention that having strong up to date disclosures and compliance software in Spanish would help to educate the buyer more before making their purchase, and help prevent false claims by the customer in the future.