The cd is by the smiths 'the queen is dead'. I was playing the cd in the dash in the BMW. In the boot I have a cd changer and the nav drive. The problem is restricted to this cd ONLY. All other CDs play ok.

The mini nav drive is under the driver's seat, the music cd drive is on the dash.

Both cars have the factory installed sound systems. Harman Kardon for the BMW and the factory one in the mini.

Thanks To both of you for the input.