Re: What a surpirse. It's muppetry.
It's interesting that everyone on this website seems to have major problems with DAB reception. IPv6 and DAB seem to attract a lot of negativity that doesn't reflect reality. (I do agree that DAB can sound terrible - but that's a commercial and not a technical issue)
I don't live in a sprawling city, rather I have lived in two fairly rural counties. DAB works fine - the places where DAB isn't, FM is basically hiss anyway. There is a difference between the four multiplexes I can get, but that's to be expected - the "SDL" mux is built on the cheap, basically from the main TV transmitters only, so it's going to cut out more than the BBC or Digital One who have a 15 year head start and DAB transmitters all over the place.
Perhaps my (and your) car's manufacturer has done a better job with the antenna than others?
No real issue at home either - I use a DAB alarm clock. With no real thought to how the wire antenna is laid, I get most of the stations with no real issue.