Reportedly it's due to the aero/thermal effects (longer to warm up) of the underhood fire recall modifications.
I understood that it was a result of a reprogramming of Regen braking parameters to fix the "grabby" brake issue. Most likely was someone speculating, but?Really just a curiosity question here: It looks like the EPA dropped the city MPG to 40 for MY23 down from 42 in MY22. Any ideas as to why? Was there a change in testing procedure, or some kind of update to the vehicle that caused this reduction, or perhaps just retested and 2 mpg is within limits of testing precision?
This dosnt match with the change. Highway mileage stayed the same aero changes would affect highway more than city. I think the grabby brake issue might explain the city change.
The brake changes only matter decelerating <6 mph and the engine probably isn't running then anyways. The missing shutters potentially cause more drag in instances where they would be totally closed and less heat retention when driving on EV. At highway speeds the ICE is mostly running and generating plenty of heat so the shutters are open and missing ones don't affect the aero.
I have not done further research. Just curious really. I figured there's enough analysts reviewing, measuring, and studying this vehicle that perhaps some theories have surfaced and indeed some have already been covered above.
Teach me to drive like you.
Us early hybrid orders that waited an extra 3 months for Ok To Buy (OKTB) longer than ecoboost. It seems hard to believe EPA wasn't actually doing tests. Otherwise, what was the holdup? Or was that just for emissions and not mpg estimates?
