[MMY]

I have just over 8000km on my MSport 520d and the long ter average is (OBC) 45.4 mpg. I changed from a F30 330d where I got average almost 49 mpg, and I wasn't driving it like Miss Daisy. With the lesser power in the 520 I am less likely to engage in more aggressive overtaking etc so maybe it's not loosened up yet. Before the 330 I had two F10 520ds and was over 49 mpg long ter on both. Typical driving in all of above was a combination of city and A roads. I do a 25 mile trip a few times a week and if I get caught behind HGVs doing 50mph the trip computer records up to 60 mpg. On motorways I,m lucky to get low 40s mpg average.