Eli5 Why do cars move at all when in drive without the accelerator being used. I’m not talking cruise control.
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To caveat, since a lot of folks are talking about *automatic* transmissions, a manual with a fair amount of torque will idle forward in first gear as well.
If the engine is engaged and putting power to the drive shaft(s), the idling still puts some power out which can slowly roll the car forward if it’s not braked, or the clutch isn’t in.
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