Hi. There is a metal sound coming from my car. If I press on the fuel paddle, and it goes up to 20km towards 30 and i maintain at that speed, the sound will appear but goes away after 30 KM. And the sounds sound like it is coming from the back rear of the car. A mechanic told us it was the exhaust that needs to be fixed. Sent it to an exhaust mechanic and was informed it was not.
Please help. Coz I have been reading reviews and some said it could be the brakes but there are no sound when I am braking.