I have had my car for almost three and a half years now, i have never really had any station logos. Strangely in the past year I have had lots of stations displaying logos, but i have no idea why. I reckon maybe ten stations now show logos, but none of the BBC channels do.
The only reason i can think of is I’ve done journeys to other regions and maybe the dab radio has received a stronger signal, from that point on storing the logo? But I am guessing, its alway been a complete mystery to me.
VW cars always seem to show dab logos flawlessly.