This is like how everybody always tells you to drink more water. You get it and know it's a good thing to do, but you don't always keep up.
Your vehicle is constantly under attack from the ground up and the sky down. Dirt, water, road oils, road salt, and a variety of other invaders are wearing down various components of your ride just by coming in contact with them. Like sugar on tooth enamel, the longer these contaminants remain on your car the more damage they could potentially do.
There’s no specific rule for how often to wash your ride because we don’t know where you live, how you drive, or how often you drive. Just be aware of dirt on your car, and use your best judgment. And if a bird releases fertilizer onto your paint, clean that off immediately.
