Hi there, I'm not sure of the website where I can enter the reg number of my car and it tells you the optional extras. I wonder if someone would be so kind as to link me to it please. Also I had a big service last year at MSL and Acid said I don't have a service book it's all done online. Is there a site where the buyer can check the history? It's for my CLS63 AMG, I'ts going up for sale. The reg Number is MAT1W but that's on retention so it might be the old number SK12UDL. I was thinking Pistonheads as a start? Cheers!