Usually it'll be a grinding sound.
wheel hub
because the gears are grinding together if its an old car it will make a louder crack sound
That's just the rev of the car. This means you are accelerating too fast. Go nice and steady.
The "awful grinding sound" might be a problem with your power steering
check the U joints in the drive shaft
Car speakers might make a weird sound as the car accelerates if the radio is equipped with an automatic sound adjuster. Some newer car radios have this feature so that the radio volume does not have to be adjusted when a window is opened or a blower fan is running.
Cause you don't know how to drive
it sounds like the belt is breaking
The Brakes inside of the wheel could be rusty in the back and cuz some Grinding sounds, or the Transmission is Wet and Rusty which can also make a Grinding sound, If it happens to your Car, Notify me at lil_carbon@hotmail.com, u need to tell me your car if u need help.... if u dont and its just a Random Question, dont add me lol but really, ill help
Need a new gearbox. You get a grinding noise only in first gear when you accelerate fast . second gear and the rest should be fine.
if its while your driving it could be wheel bearings