Don't be so sure things will get better. We have 3500 miles on our FEH and still can't get above 5 miles per hour without the ICE kicking in, no matter how slowly we accellerate. We're getting about 22 mpg over all in 70% city/30% hwy driving.

We've taken our FEH into the dealer 3 times and every time they tell us nothing is wrong. But obviously, if we're barely getting 50% of the posted mileage, something is wrong.