maybe the ML bug is stinging me without me even knowing. All of a sudden since about 2 weeks ago my trip computer is telling me that my truck, a 05 500, is very good on gas. On a typical highway cruise, the thing sits mostly on 18mpg. Lately (ever since I hit about 20.6 from my NY ski trip - and I was extremely careful during that drive, BTW!!!), I'm at 19, 19.7 20 20.1 - on same roads, driving the same (I think) wow, this is good!!! I wonder what it is that I'm doing right or is the darn thing broke? Typically, I'm about 1-1.5mpg below what the computer says, but what a feeling!!!