We seem to be getting significantly better gas mileage with my 6 speed than with my wife's automatic? & I drive the snot out of the 6 spd compared to how we drive the automatic. Might that be because her automatic still only has <1K miles on it?

I frequently start out in 2nd gear in my 6 spd....& we've been running the automatic in the W mode (starts out in 2nd).....when I'm not trying to race anyone....shouldn't they both get slightly better gas mileage starting out in 2nd?

I thought the automatic was supposed to get even better gas mileage than the 6spd????