This story may interest some of you. Last fall I took advantage of the complimentary oil change/tire rotation for my 2018 Malibu Premier. The car was about a year old and I know that air and cabin filters needed to be changed so for about $35 I purchased the two filters from auto zone and watched a video on youtube. In about ten minutes I had replaced both filters. Four days later I bring the car into the dealership and wait for the service. I get a phone notification from the service writer who asked to see me. He told me that "on inspection" I needed to replace the air and cabin filters. The cost would be $154 including labor! I asked the service writer if the tech had actually inspected the filters. He became offended and arrogant at such a question. I calmly explained that both filters were new and that I had replaced them a few days before. He excused himself and went into the garage. He returned and apologized. It seems the recommendation was because of mileage and NOT because of any inspection. I showed him the brochure for the "22 point inspection" which included a visual inspection of the filters. He apologized again, handed me my key fob and turned his back to me and walked away.