....... Because they're butt ugly and you have no idea what possessed the owners to buy them. Can you add any to this list?
Renault Clio Estate
Renault Clio Saloon
Renault Megane saloon
Ford Focus Saloon
(Why turn a decent hatch in to a saloon?)
Actually staying on the Saloon hating, old school this time:
Vauxhall Nova Saloon