Rust is really as much a function of time vs. miles. If you drive through more salt spray, that will accelerate rust, but lower miles isn't necessarily going to make a huge difference unless it's very low miles (i.e. a 'vert stored winters).My saab only has 89k on it, however it is getting a little rusty. All of you guys that have 250k+ miles really make me want to keep the car. I just looks like I have had bad luck with mine.