smug appeal
When someone says something has smug appeal, they mean it has a set of qualities that make it attractive to smug people (i.e. people who like to take excessive pride in themselves, usually because they are rich or upper-class)
No one can overlook the smug appeal of a BMW or a Mercedes.
It's an elegant car, with much smug appeal for the rich.
It's an elegant car, with much smug appeal for the rich.