Bolero bluetooth handsfree noise

Hi, when i talk to my wife on the phone in the car, the sound quality isn´t pretty good. It´s a great deal of noise when talking on the bluetooth handsfree.

Some of my friends have also complained that it sounds like **** when i´m talkin in the car over bluetooth. Like an NMT phone from the 90:s.

When i talk to my dad on his bluetooth handsfree it´s hard to tell that he is driving, verry good sound. But he drives an BMW x3 2012, so the system could be a bit better.

Does anyone experience this and is there a solution?