Am a new member whose kept my 323i lookin brand new since 2001. I drove it all over Georgia n Florida then shipped it to africa. Today av seen on my neighbors OBD a number that has made me feel dizzy. Her 2006 X3 petrol is showing 58.8MPG. Is this freakin possible? I signed up here bcoz av been getting clear answers on this forum. My mpg is at its worst after I changed my leakin oil separator,..it had gone to 20.1 n now has shot down to 16.4 guzzling like a caterpillar. But I rem clearly getting 26.7 in the states city driving.