One of its standout features was the self-closing doors and trunk, an industry-first that added a sense of effortless luxury. The soft-close assist mechanism gently pulled the doors shut, eliminating the need for force. The dual-pane windows improved cabin insulation, making it one of the quietest sedans ever produced. Another innovation was the "Guide Rods"—small hydraulic markers that rose from the rear fenders when reversing, helping drivers gauge the car’s long dimensions before parking sensors became common.

Though expensive to produce, the 600 SEL became a symbol of unparalleled engineering and luxury, often used by world leaders, CEOs, and celebrities. It remains one of the most technologically advanced and durable Mercedes-Benz models ever built, marking the last era of Mercedes’ "no-compromise" design philosophy.