 Ok, this is my second Bimma. 1st was an 84 325e that saved me a couple of times. I bought this 528i in 06 with only 35k miles on it. Only issues were the typical stuff that I had my dealership fix. The reason I am writing this review is to state that I just got 620 miles on 1 tank of gas. I am no "hiper-miler" but that's outstanding. That equated to 34 mpg.  Just installed my own cd player and a sub. 10 speakers and still no bass. great thing is that my radio charges my bbery curve.