SL\55\500 (02 -on) Cam Drive Belt or Chain

[jb12]

Does any one know if the the SL55 & 500 use belt or chain to drive the cam? and when they should be replaced?

Thanks

[jb12]

Thanks for the reply, The only reason I was asking was that I am looking to purchase an SL55 AMG with 44k on the clock, so just wanted to make sure that it didn’t need replacing at the next service.