[SoCalGuy]

1. I've driven the car almost entirely in Sport mode today - 95 miles or so. My average miles per gallon is 21 in Sport mode.

2. When the ICE kicks in sometimes, usually at lower speeds, it makes this very noticeable grumbling sound... something between a garbage disposal and deep throated blender/mixer. Anyone else notice this?

 

[SoCalGuy]

The noise I'm referring to is different than the background ICE hum/rumble... Its isolated and sounds as if it's coming from just in front of the driver's feet... Or slightly to the left of that. Is that what you've noticed too?

 

[SoCalGuy]

Dennis, that feature was changed in production cars. Sport no longer adds Stealth miles but rather maintains whatever level of charge is in the battery at the time you engage Sport mode

Dennis, have you experienced this noise I described sometimes in Sport mode?

 

[SoCalGuy]

The noises you describe - does it seem like it's coming from just in front of your feet?

 

[SoCalGuy]

Heard it again today a few times. The most noticeable/long instance was when I was driving up a curved long hill. Battery had 24 miles of range and I was maintaining about 50mph... It lasted probably 6s and then off and on a few times.