Rust is a common problem on these 2000 - 2001 Mercs. Mine is a S500 2000 Reg. I had rust on all four wings and boot lid as well. Fortunately, this was covered under Warranty by Merc in a 20 - 80% scheme. Still i had to pay around £1.5k GBP to get it fixed.
But despite the issues, i still love the car. This is the best i have driven so far.
But despite the issues, i still love the car. This is the best i have driven so far.