I, like almost everyone else, have not read my owner's manual cover to cover.
Shall we say, "Not riveting reading"?
Maybe it would make appropriate bathroom reading.

Another feature that might be obscure is the "intelligent" windshield wipers.
On a certain setting they slow down when you are stopped and speed up when you do.
Check your manual.

A bad surprise for me was when I found out the car turns the air conditioner on when I direct air flow up to the windshdield.
Then there is no green LED that warns you it is on, just a small dim AC ON on the display that old farts like me can't see without our glasses.
If you didn't know this you might drive around for a long time with the AC on.

Need fewer troops to support.
Drive a hybrid.
Best tank 71.65 MPG.

Before this car I spent two years learning hypermiling on my 2004 HCH1.