On the one hand, the dealership was fast, even fas...

On the one hand, the dealership was fast, even faster than I hoped, when I brought the car in with a battery issue. On the other hand, they tried to get me to pay for one thing (a 100$ draw test) that I probably did not need, and another thing (getting corrosion off my battery) that definitely was not needed. I had personally removed all the corrosion from the visible terminals of my battery and am not sure what other part might have needed scraping, as the rest of the exterior is plastic. Dealer: please don't do that. I don't mind paying a bit more, but would like to be able to trust you. Dealers are like the car's parents. They may have a higher standard (and thus their work should come with a bit higher price tag), but you ought to be able to trust them above all.