: Pitched as a safety feature, these can cost $500 or more and may even void parts of your warranty. Redundant or Negotiable Fees
: Dealers claim this maintains tire pressure better, but since air is already 78% nitrogen , the benefits are minimal and rarely worth the extra cost. what not to pay for when buying a car
: These include fabric protection, paint sealants, and rustproofing. Modern vehicles are already built to resist corrosion, and "paint sealant" is often just a high-priced wax job. : Pitched as a safety feature, these can
