I just spoke to the dealer, and He told me that he doesn't do PPI's but he said "You're more than welcome to bring a mechanic on the lot", are there any other options close to PPI's that is done as well? If not, I'm just going to try to bring a Mercedes Benz Mechanic with me to help in inspecting the car.

Thanks for all the help so far, I'm clueless when it comes to cars.