My $70,000 Mercedes S430 2003 is showing signs of significant Rust above both rear wheel wells. Has anyone ever experienced this problem before? To correct and repaint the rusty areas I am looking at $4,500. Is this what you can expect from a Mercedes? I am shocked that a car of this caliber would rust! By the way, the car is garage kept, washed at least weekly, and is in immaculate condition, except for the Rust. Also, the body shops I spoke with said they would NOT guarantee the work as the rust may return within 6 months.
What to do?