That's the sad part...the CAFE standards are only for OEM's. You can load all the way to the GVWR. In the past, the emissions testing was done at GVWR...but I think to accommodate the CAFE standards, they're testing them to lower numbers so they can get their fleet average. IN the end, the customer is loading them completely anyway, so its just more hoops to make us "feel" better.
So the Mercedes, as a diesel is tested to the GVWR.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).