No, most guys are getting 23 max, 21 is more typical.
Guys getting above 23 are driving very deliberately economically and monitoring their driving very carefully and going below the highway speed limits.
Also the anticipated increase in MPG in Sprinters following break-in have not been seen.
The first 2000 miles reflect pretty much what the rest will be like despite everyone assuming an increase.
My 04 with over 500,000 miles on her gets 23 Highway, and mine broke in right around 100,000 picked up about 2 mpg. I am an active member on the Sprinter site guys are getting 26 out of the 4 cylinder. Gonna see what the transit Diesel will get