So far our mileage hasn't improved from around 21 mpg but its basically no highway, mostly stop and go around town. We only have about 900 miles on it and I would be very disappointed if it stayed this low but I expect it to get better once its broken in.
1995 325i,1996 328ci,1997 528i,1997 Z3 2.8,
2001 X5 3.0,2001 330i Conv,2002 M3 Conv,
2003 M3 Coupe,2004 M3 Coupe,2004 Z4 3.0,
2004 X3 3.0,2007 X3 3.0,2007 335i Conv.,
2013 X1 28 sdrive M Sport, 2014 M235 on order