I know how to drive a car, I've had a driving license for over 15 years and I have driven stick shift for most of that time.
some notes:
I'm actually starting the engine after pressing the clutch, as you would IRL.
I'm using about 50% throttle, which is very generous compared to other car games and IRL. Normally you'd give about 30%.
Update: The engine will stall using this with the default assignment method. If I go to the advanced assigment, there is no modifier active. If I change it to analog value, without changing anything else, this all of a sudden works. The movement of the foot in the game appears exactly the same.
Another observation: if the axis assignment has been made via the default way, so without going through advanced assignment, the engine will stall even if the clutch pedal is fully pressed down when starting the engine in gear.
There is a huge problem with analog assigments, see #AREXP-483 , which might work on your end with your very special way of assigning things, but nobody will ever understand, as you're using very non-standard ways to assign axis.