11.6? I cannot even get the barn shaped ML63s that low unless I live on the throttle and brakes permanently. Are you pulling a concrete block or something?
Three requirements:
1. Ambient temperature just above freezing
2. Drive 1.2 miles at between 10 and 30 mph including a hill at 15mph...
3. Let the car cool for an hour before repeating 2.
On a longer run I've seen 28mpg, yet to crack 30. The C43 will easily show 35, on a long, legally compliant run.
