Post by
SteveTheTech »
https://forums.nicoclub.com/stevethetech-u103802.html
Sun Feb 17, 2013 4:38 pm
What were the numbers you observed in the Y50 as opposed to the Y51?
Personally I believe ECO mode was created for the perfect world we have yet to find. This magic utopia where you can accelerate at a measly pace usually reserved for the Prius. Stepping into the throttle to the point where the ECO light flashes yellow is going to cause the load on the engine and transmission to increase beyond what it would in Standard or even Sport mode. The Standard mode is economically minded, the shift timing is fairly conservative and people tend to complain it hangs up or hesitates before upshifting. In my neck of the woods Sport mode works better for the 35-45 mph speeds common on non Interstate roads, it tends to stick somewhere between 3 and 4 instead of going into 7 at speeds as low as 30mph.
Being from Mass myself I know the average driving speed (although posted)is in a similar range in my area actual speed often exceeds that. I bet you will have much better luck (and fun) driving your M in Sport mode. Save ECO for the Turnpike.