Hi Callum - thanks for responding. My bad - I meant "model" not "badge". The problem I have is that there is a choice of two models under Mercedes Benz for my vehicle - either E Class (for all E Class Models)  or E 350 (the specific model). When I first published the ad I selected E Class. But I now realise that there is only a small number of vehicles listed under that model, compared to the specific model types - so I'd like to change to E350 model type but can't. (I've had literally zero enquiries on the ad despite significant price reductions)