I drive an HCH with CVT and have discovered somthing that sounds vaguely similar to that, as well. When driving over rolling hills on the freeway, I'll pick up speed going down, then on the way back up, allow myself to coast back up the other side until I lose around 10-15mph in speed, then I will rapidly press the accelerator one or two times until I feel the IMA kick in. Once this happens, I will gradually back off until I'm at the lightest throttle level with the IMA still engaged, and it will pull me over the crest of the hill. I do the same any time I want to accelerate, I will do a quick "assisted" boost until I'm just a bit over my target speed, then quickly back off. I usually find that by enganging the motor assist, I pull a bit over 40mpg instantaneous uphill at highway speeds, whereas before I'd usually get considerably under 40mpg cresting hills with just the ICE by very gradually applying more throttle.ncnightowl said:I use a similar technique. It improves mpg on inclines by slightly increasing power in lean-burn mode. I basically "double-click" the accelerator by pushing in about halfway then letting off until lean burn is achieved then pressing back in until instantaneous reads about 75 mpg. I then coast with load up the hill, but lose speed slower than otherwise. I have a 5-speed, BTW.