Is rust proofing for new cars necessary?

The rust proofing from the dealer gives you certain years of warranty for the rust proofing. They give you a certificate and instruction/coupons. You are supposed to send your car to the rust proofing place (not your dealership) to check it out and repatch if necessary every year. read more

You are incorrect. Just take a look at the 10 worst cars for rust lists. Lots of new cars have huge problems with rust. Rust proofing stops or greatly slows it down. If you’re going to keep the car, and you live where the roads are salted, rust proof it with a “wet” product every year. Especially important with the underbody. read more