A service contract is often sold on top of a warranty the carmaker already gives you. That is the first thing to sort out, because the two documents can sound alike and still answer different questions. The maker's warranty comes with the vehicle and follows the maker's own terms. A service contract is a separate agreement with its own seller, its own administrator, and its own list of what it will and will not pay toward.

Find where the two documents touch

Read the contract for any sentence that mentions the manufacturer's warranty. Some contracts say they start only after the maker's coverage ends. Others say they run alongside it. The wording decides who you call, who pays, and whether a claim gets sent to the wrong company first.

Ask the seller to point to the exact clause. If the answer is a general sentence about 'coordination' with no page or section named, get the answer in writing before you sign.

Check the order of the paperwork

Most contract packets bundle several pages: the main agreement, a coverage form, a registration page, and sometimes a summary. Look for a sentence that says which document controls if two of them disagree. If none exists, you are relying on a reader to guess which page wins. Ask the seller to show you that sentence before you sign.

Compare the maker's terms with the contract's terms

Pull up the maker's warranty booklet, which is usually easy to find online, and set it beside the contract. Look at three things. Does each document define a covered part the same way? Does each one set the same rules for where repairs can be done? And does the contract's start line up with the end of the maker's coverage, or is there a gap or an overlap? A gap is the case you most want to catch early.

Where to look for a sample

Some providers post a sample contract so you can read the wording before anyone asks for a signature. The list of providers that do this is on this site's sample contract page. Reading a sample lets you test the overlap question against a document you can keep, not against a sales summary.

Keep the packet together

Ask for every page, including the ones you were told were only formalities. Keep the maker's warranty booklet, the service contract, and any amendment in one place. When a claim comes up, you will want to show the exact clause that names the responsible company, and you will not want to hunt for it.