It seemed like a bad rust proof job. Is it? If so, what to do about it?

Question

I had my car rust proof at the dealer. When I took the car home, and I looked underneath my car, i can see some black undercoatings. HOwever, there was hardly any at all, and only a little here and there in minor places. Is this suppose to be right? My sister just had her car rust proof at the exact dealer, and her car seemed to have had much much more undercoatings compared to mine.

Now, what should I do about this?

Answer 1

Take the car back to the dealer and explain your concerns with the service manager.
He should be more than willing to help you with any questions you might have.

Answer 2

there should be a lot of rust proofing. they don't spray the drive shaft, heat shield and obviously the exaust. other than that there should be undercoating pretty much everywhere. i would complain. most dealerships don't do it in house they usually have another party take it to there shop and do it there than bring it back to the dealership.

Answer 3

take it back and have them take a look. maybe seeing you are aware of it, they may redue it