Hello everyone, I***8217;ve always wanted to own a BMW and never have I had the opportunity until now. This has been the most stressful car shopping I have ever done. I am interested in a 2011-2014(528), 2011-2013(535), 2011-2013(740,750). My budget is only around 14-16K(I have 2017 Toyota Highlander) so can***8217;t spend a ton of money. I really need help making my decision easier. I am trying to targe something under 70K miles. My first concern is which model is by far the most expensive to maintain? I don***8217;t want to be in and out of the repair shop. It***8217;s really hard to decide between the 5 and 7 series. This will be a daily driver about 5-10 miles a day. Guys please I need all the tips I can get. I***8217;ve been watching YouTube videos trying to get as much info as possible. I***8217;m not very knowledgeable with cars whatsoever.