For the last 3 tanks I'm getting 23-24 combined driving. Average speed 35-40MPH in my city and around. Getting 510+ ml out of the tank with my new remap vs 21-22 in stock or JBD.
Retired: 2005 N52 E90 330i Sport 6AT
Retired: 2007 N54 E92 335i Sport 6AT
Current: 2012 M57 E70 X5 xDrive35D