I just semi-detailed mine today. Washed it last week, wasn't that dirty so I just used Quik Detailer and cleaned along for a fresh feel and look. Recently I also just washed and semi-detailed the wagon (300TE) but that doesn't count huh
There was one time I washed it twice a week but since we're now in an underground parking garage it doesn't get as exposed to the elements so I just wash it once a week.