Knowledge Hub · Service & protection · Expert guide · 7 min read

Your factory warranty: what it covers and how claims get denied

A $3,000 repair comes back “not covered.” Bumper-to-bumper vs. powertrain, the real reasons claims get denied, what Magnuson-Moss protects, and the records that win.

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Free preview · from the dealership side of the desk

Most new-car buyers know they have a warranty and almost nothing else about it: when it ends, what it excludes, what the dealer needs to see before a claim is approved. That’s fine until a $3,000 repair comes back “not covered,” and the reason is a modified intake, a missing oil change receipt, or a part that was never on the list in the first place.

From the service side, warranty work is a process: the dealer diagnoses, decides whether it qualifies, and bills the manufacturer, which can audit and reject the claim. So dealers are careful about what they submit. Insider truth: using an independent shop for maintenance doesn’t by itself void your warranty, but you need the receipts to prove the work was done. Below: what’s usually covered and excluded, Magnuson-Moss in plain words, how claims actually get denied, records that win, a worked example, and what to say.

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In the full guide

  1. The main warranties on a new car
  2. What warranties do not cover
  3. Magnuson-Moss in plain words
  4. How claims actually get denied
  5. Keeping records that win
  6. Worked example
  7. What to say
  8. Your game plan

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