"Accelerator response" refers to how quickly a vehicle responds to pressing the accelerator pedal. It describes the speed and efficiency with which a car increases its speed when the accelerator is pushed. Full definition
This allows the driver to select from normal, comfort or sport modes to define the desired suspension, steering and accelerator response settings for any particular journey. (ausmotive.com)
Driving Dynamics Control allows the driver to tailor accelerator response characteristics, engine response, power steering characteristics, and the Dynamic Stability Control thresholds. (bmwblog.com)
Two new driver - selectable modes alter accelerator response, transmission timing and steering feel — one to benefit fuel economy, the other to enhance performance. (cars.com)