As reliable as CARInfo has been through the years I wanted to share another site that, in my opinion, surpass it in terms of results and presentation. In English, no translation needed.
Disclaimer: I have no relation or financial interest with this website. Found it some years ago while looking for a better option.
https://www.datamb.com/
DataMB is a secure site that produces great looking results, printable as is or easily converted to PDF. As opposed to CARInfo where sometimes you only get the option code numbers (like in the case of my S500), DataMB opens every one saving you a ton of work and the aggravation of looking them up individually.
Included is a production (release) date and country, and delivery date.
There's another one that I only use for a particular reason: the factory where the car was built. That's how I learned mine was made in the plant at Sindelfingen, just outside of Stuttgart.
https://www.vindecoderz.com/EN/Mercedes-Benz/S-CLASS
Both of these are MB specific, the latter being S Class specific.
Finally, for those worse case scenarios, a couple of years ago I put together a complete list of option codes, an amalgamation of several lists floating around the intertubes.
Enjoy.