Don't listen to these people. I had the same question as you 4 months ago. I had not taken physics I OR II and I wanted to take the MCAT. Here is what I did. I enrolled in Physics I and II this summer (sequentially, not concurrently) at a local community college while simultaneously taking a TPR MCAT course. Prior to this I had no physics knowledge, but I am very skilled in math. TPR taught me all the physics I knew and I didnt learn much from the CC class. Needless to say my lowest test score in Physics I and II was a 95. I took the MCAT on 8/6 while only being half way done with my Physics II class. I was getting 36s on AAMC 7,8,9 with PS scores of 12-14. Bottom line: you dont need to complete physics before the MCAT. TPR will teach you everything you need to know.