Idle creep, sometimes called idle speed or just creep is the default speed that a vehicle with an
automatic transmission
An automatic transmission (sometimes abbreviated to auto or AT) is a multi-speed transmission used in internal combustion engine-based motor vehicles that does not require any input from the driver to change forward gears under normal driving c ...
will move either forward or in reverse when the change lever is in D for drive or R for reverse and the foot is taken off the brake pedal but the accelerator pedal is not depressed. This behaviour is due to torque converter or clutch(es) being used in a vehicle. Creep can be faked in vehicles without those mechanisms such as transmission-less fully electric cars by automatically applying throttle when creep is needed. Manufacturers add fake creep to cars to make them feel more natural/traditional. Similar to how shift steps are added to a CVT (gear-less transmission) to simulate the feel of a geared transmission or fake pre-recorded exhaust sounds to make a car sound the way people expect.
See also
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Automatic transmission
An automatic transmission (sometimes abbreviated to auto or AT) is a multi-speed transmission used in internal combustion engine-based motor vehicles that does not require any input from the driver to change forward gears under normal driving c ...
References
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External links
- Patent description, hybrid vehicle creep.
Automotive transmission technologies