I recently got a used 2014 Hyundai Elantra GL (all 4 disc brakes) from a mechanic, he says the brake pads are new, but I continue hearing loud grinding noises from the front brakes (I suppose) from inside the cabin.
Here's a video I shot where you can clearly hear the noise.
https://photos.app.goo.gl/xAg6ww8osfgevZ7g9
The car also stops with a jerk.
In the video, you can see the camera shake because of this jerk.
What could be the problem here?