Standard 300 equipment included dual fog lamps, backup lights, a triple horn, electric clock, lighter, locking glove box, and octane-rating compensator switch. Interior features included door armrests, retracting centre rear armrest, dual sun visors, and front door pockets.
Each open style offered 2+2 seating with fold-down rear seats and rolled/pleated leather upholstery.
Customers had a choice of wood veneers: either straight-grain or burled walnut. Fitted luggage was available, too.
Two spare tire wells sat in the trunk.
On the dashboard was a control for ignition timing. Standard equipment included a signal-seeking radio, no-glare mirrors, vacuum-assisted brakes, backup lights, reclining seats, and windshield washers.
The four-door luxury saloon version of the 300 soon earned itself the title of the " Adenauer" in the name of Konrad Adenauer, the first post-war Chancellor of West Germany from 1949 to 1963, Adenauer, a much loved and respected figure, was primarily responsible for rebuilding the country's economy.