I recently bought a 2011 Mazda3 hatchback and it came pre-certified. I just noticed that the Pre-Owned Vehicle Limited Warranty Provisions document was never signed or anything, but just included in the package of documents, although the dealer assured me that this was covered by Mazda's CPO program. Did I just get scammed, or is this not a big deal? How do I check if I'm truly under the CPO warranty?

Last but not least, for repairs to be covered by the CPO warranty, do I have to go to the Mazda dealership? And can I have inspections done at other places but have it fixed at the dealership for warranty coverage?