As a consumer, I use sites such as TrueCar because I am sick and tired of the manipulation received when I go direct to the dealer to buy. I would much rather go to the dealer and strike a deal. But, when anyone attempts that we get the old sticker price starting point, "let me ask the manager", and gimmicks galore(tektor, scotch gaurd, (or other surface protections) extended warranty and on and on.
Additionally once I think I have a deal I see the $400-500 "DOC FEE" crap.
Want business without the PITA- Try honest advertising, honest pricing and no add-on profit centers. Advertise out the door pricing and watch the customers come back.