As we hinted at last month here at BF the US will see its first non-hybrid model with Auto/Stop Start with September production. We had heard several models would see this fuel saving feature this fall but official documents have revealed that the ///M3 will be the introductory model of this new to the US Efficient Dynamics technology.

Auto/Stop start is a feature that can be turned on or off by the driver, the system basically turns the engine off when the car is at a stop idling (while in Neutral) and restarts when the clutch or accelerator is depressed. It has not been taken into account by the EPA for official MPG figures but is said to improve economy in the real world as is evidenced by EU methods.