A service contract or factory warranty is usually read for what it covers, and its exclusions are read last, if at all. This note asks you to reverse that order. The list of what is left out often decides a repair request more than the headline coverage does. This is a general explainer. It does not describe what any named company's contract covers, and the published figures for each brand sit in that brand's own tables on this site.
Find the list, then find out whether it is closed
Exclusions are not always in one place. Some contracts put them in a block after the coverage grant. Others spread them through the definitions, the maintenance section, or a separate schedule attached to the form. Search the document for words such as exclude, excluded, not covered, does not include, and except. Then check whether the list is closed or open. Phrases like including but not limited to mean the named items are examples, and a part that is not named may still be excluded under a general heading. A closed list names everything that is excluded and leaves the rest in play. Ask the seller which kind of list you have.
Sort the exclusions into kinds
Most exclusions fall into a few groups, and each group calls for a different question.
Wear items are parts expected to be replaced through use, such as brake pads, wiper blades, filters, and fluids. Ask whether they are excluded outright or only when the wear is judged normal.
Cosmetic items cover trim, paint, upholstery, and surface finishes. Ask whether a part that fails in a way that looks like wear is judged by its function or by its appearance.
Causation exclusions reach failures from accident, misuse, lack of maintenance, modification, competition use, or environmental damage. Ask who decides the cause, what evidence the contract says is needed, and whether that decision can be reviewed.
Use exclusions reach commercial use, rental, delivery, or any use the contract does not describe as intended. Ask whether the vehicle's use history at the time of sale matters, and whether a later change of use would end coverage.
Aftermarket and unauthorized work exclusions reach parts or repairs not done by an authorized shop or with approved parts. Ask which repairs need prior approval, and whether a repair made by an outside shop in an emergency is treated differently.
Check the link between the excluded item and the failed part
A failure is seldom one part alone. A covered component can fail because an excluded component failed first, and the contract may then deny the whole repair. Read the section on consequential damage, and ask whether a covered part is protected when the cause was an excluded item. Also ask whether a failure traced to an excluded part is excluded even when the covered part was damaged by it. The answer changes the cost of an ordinary repair more than most readers expect.
Compare the exclusions with the maintenance terms
Many contracts tie coverage to maintenance performed on the schedule in the owner's guide or in the contract itself. The exclusion list and the maintenance section need to be read together. If a missed service can end coverage for a later failure, keep the dates, receipts, and proof of each service in an orderly file from the start. The site's guidance on keeping a service log applies here, and the brand drawers hold the factory terms pages where each line's maintenance wording is set out.
Questions to put in writing
Before you sign, ask the seller or provider to answer these in writing. Is the exclusion list closed or open? Which parts are excluded because they wear out, and which because of cause? Does an excluded part end coverage for a covered part? Who decides cause, and how is that decision appealed? Which repairs need prior approval, and how is an emergency repair handled? Does the contract change if the vehicle is used for work or rented out? Keep the written answers with the contract, because a verbal reassurance is not part of the document.
Where to look on this site
This desk does not rank or compare contract terms. The factory terms pages describe how each brand's service contracts are set out, when they end, and what a contract adds. The Acura service contracts page and the Audi service contracts page are examples. Use them to find the exact exclusion wording to set against your own contract, not as a judgment of either company.