Why sometimes car vibrates at low speed?
Hi everyone. I purchased used Ford Focus 2012 a month ago and its mileage is around 40400 miles.
In the first week itself, I've noticed Screeeeeech sound while taking reverse and then applying brakes. The frequency of hearing this sound is very less.
But 3 days before, I noticed huge vibration in steering for about 3 to 4 seconds while accelerating at lower gear.
And today, I noticed the same problem. The vibration is much greater than before and it happened when I apply brakes. The first vibration occurred when I slowed down in speed breaker and the second happened when I applied brakes during the turn and I was about to lose the control.
So, after noticing these things I went to mechanic explained him everything. Unfortunately, none of the things happened when he took the test drive.
Any idea what's going on with my car? I don't have even basic knowledge to I identify where the problem is.
Any help is appreciated.