Hi mate , message me on Xbox what ' s your gamertag ? <| sep |> I can help alleviate some of the confusion . Twenty years after they ruined the 3 series by turning it into a 4 door sedan they realized it was a mistake to get rid of an entire customer market . So they came up with the 1 series to replace it and then ruined it by turning it into a 4 door sedan . They realized that was a mistake and came up with the 4 series to replace it and then ruined it by turning it into a 4 door sedan . They realized that was a mistake and came up with the 2 series to replace it and then ruined it by turning it into a 4 door sedan . So what you end up with is four different versions of the 5 series , and since the 5 series has become huge and heavy it can be thought of as analogous to the old 7 series , along with the new 6 series which they also ruined by turning into a sedan . All that being the case , you actually have fewer models than during the old days . Since there are no more 3 or 6 or 8 series what you ' re left with is a bunch of mislabeled versions of the 5 , and the 7 . Unless you want a minivan , that is . See ? Simple . One of these days they ' ll understand that building a 2 door version of a 4 door car is not the same as building a 2 door car . Mercedes knows this , but BMW is running out of numbers at an alarming rate .