Originally Posted by arghx7
The shift cycle can be negotiated. The thing you have to realize is that there are 5 tests used to calculate fuel economy ("5 cycle fuel economy") and complicated weighting involved that's constantly changing.
A lot of it comes down to back room negotiations among a few people.
I understand, but in the end the cycle is intended to represent "typical" driving, whatever that means. A good driver who places higher than typical priority on fuel economy can re-optimize their shifting and improve economy.
The manufacturer has a lot more power to negotiate the shift points of the automatic version of a car.