Don't have these on the M but were an issue on my E85:-
- cup holders are useless. Go over any bump and they will deposit the coffee in your Pret/Costa/Starbucks/Caffe Nero cup all over your dash, door card and carpet
- non Xenon headlights. A disgrace on a car that was capable of 155mph
- wing mirror glass
On the M...not a lot really apart from rear suspension being crashy.
- cup holders are useless. Go over any bump and they will deposit the coffee in your Pret/Costa/Starbucks/Caffe Nero cup all over your dash, door card and carpet
- non Xenon headlights. A disgrace on a car that was capable of 155mph
- wing mirror glass
On the M...not a lot really apart from rear suspension being crashy.

, I am thinking of naming my car after a resovoir.