Compare the cost of the warranty (e.g., $2,000–$4,000) against your ability to pay for a surprise $1,500 repair. If you have "rainy day" savings, you are often better off self-insuring by saving that premium money in a high-yield account.

Deciding on an —often called a vehicle service contract —depends largely on your risk tolerance and the reliability of the car you are purchasing. The Feature: "Warranty Worth Calculator"

If you plan to trade the car in within 3–4 years, you are likely already covered by the factory bumper-to-bumper warranty . An extended plan is only useful if you intend to keep the car for 6+ years.

You do not have to buy the warranty the day you buy the car. You can usually add a manufacturer-backed extended plan anytime before the original factory warranty expires.

The tool should flag whether the contract is "Exclusionary" (covers everything except a few listed items) or "Named Component" (only covers what is listed). Exclusionary plans are generally the only ones worth the investment. Quick Checklist for Now