The dealer wants different financing terms
Request the proposed change and its contract basis in writing. Compare it with every signed loan and conditional-delivery document before signing again. Verify the status with the named creditor. If the dealer demands the car back, threatens repossession, or sets a short deadline, get prompt local legal help with the documents.
Keep together: Signed contract, approval or delivery conditions, creditor details, original and revised terms, trade/down-payment receipts, messages, and the exact response deadline.
A repair, warranty, or promised-work problem
Notify the responsible dealer, manufacturer, or contract administrator using the required claim procedure. Ask for a written diagnosis, coverage decision, reason for any denial, and next step. Check authorization rules before paying for repairs you expect someone else to cover. Keep each repair visit and days out of service.
Keep together: Buyers Guide, warranty/service contract, promised-work form, purchase mileage, symptom dates, repair orders, invoices, photos, claim numbers, and written denials.
An unwanted product or missing cancellation refund
Identify the exact product, administrator, signed authorization, and cancellation terms. Send a dated request through the required channel and retain proof of receipt. Ask for the effective date, calculation, fees, expected payment date, and refund recipient. If the product was financed, verify any credit with the lender; a refund does not necessarily change the scheduled payment.
Keep together: Itemized price, product agreement, consent documents, cancellation instructions, submitted request, delivery receipt, refund calculation, and lender account-credit confirmation.
The trade loan, title, or registration is unresolved
Confirm an old trade payoff directly with the old lender. For missing title, lien release, registration, or plates, contact the responsible seller/lienholder and state motor-vehicle agency. Ask what remains missing and record permit expiration and filing deadlines. Save each response and follow up before a deadline passes.
Keep together: Trade allowance and payoff agreement, old-lender status, title/lien documents, filing receipts, seller commitments, temporary permit, and agency reference numbers.
A payment, servicing, or credit-report error
Contact the verified lender or servicer with the disputed amount, date, and proof of payment. Ask for an explanation and written correction. If a payment is becoming unaffordable, contact the servicer promptly about available options and get any arrangement in writing. Dispute credit-report errors with the bureau and the business that supplied them.
Keep together: Signed payment schedule, statements, payment confirmations, fees, correspondence, credit-report date, dispute references, and upcoming payment deadline.
The ad, price, condition, or agreement was misrepresented
Preserve the original ad or offer and write a factual comparison with what you received. Ask the seller for a specific written resolution. A state consumer-protection office can direct state-law complaints; the FTC accepts reports of deceptive practices. A complaint is not a guaranteed refund or a substitute for meeting a legal deadline.
Keep together: Dated ad/screenshots, exact VIN, quote, signed agreement, payment receipts, condition/history findings, promised terms, and the seller's response.