Reviewed by Attorney: Chuck Panzarella, JD Buying a used car can feel risky, but a quality warranty brings peace of mind. This comprehensive guide answers all your questions about used car warranties. What is a Used Car Warranty? A used car warranty is an agreement between the buyer and seller that covers repairs and parts replacements. It protects against expensive mechanical issues for a set time period after buying the used vehicle. Key Takeaways About Used Car Warranties Used cars … [Read more...] about Is There a 30-Day Warranty on Used Cars?