For sale is a 1991 Mercedes-Benz 500 SEC (C126) in the colour grey and with a black leather interior. Highlights: Model-kept 500 SEC in attractive colour combination Value reports of over 22,000 € from August 2026 are available 2. Hand and always in family possession (the brother-in-law of the current owner bought the car in 1991 as a demonstration car, in 1993 the current owners then took over it) Checkbook available Extensive and fully functional equipment Last service in November 2025, fresh TÜV until August 2028 Brake system including discs and pads as well as shock absorbers renewed a year ago Retrofitted stainless steel exhaust system Cold start control Immobilizer retrofitted Radio and sound system modernized Air conditioning upgraded to current standard Lowered (decent) All modifications are registered. The original rims are available General information about the vehicle Year of construction: 1991 First registration: Germany, 1991 Location: 77830 Bühlertal, Germany Number of vehicle owners: 2 (since first registration in family ownership) Accident-free H-mark TÜV up to 08/2028 Approved Ready to go Model history With the W126 series, Mercedes-Benz introduced the second generation of the S-Class from 1979 – a milestone in technology, comfort and design. Starting in 1981, the elegant C126 coupé completed the 500 SEC series. This model combined powerful V8 drivetrain with timeless lines and luxurious interior. A total of more than 74,000 coupés were built, making the SEC one of the most sought-after top-class coupes of the brand to this day. Facts Exterior & Interior: Outer color: Grey Interior equipment: black leather equipment, well maintained condition with small traces of wear Repainted: partially repainted (cosmetic repaintings) Engine and transmission: 5.0-litre V8 engine with 245 hp Automatic gearboxes Last service: 11/2025 Running power: Running speed: 385.028 km Running performance understandable: Yes Checkbook: available Documentation: German vehicle papers TÜV reports Checkbook Service reports, invoices Value reports from August 2026 with 22,000€ rating Tyres, bodywork & underbody: Tyres: approx. 7mm profile Bodywork: good condition, only minimal traces of age Underfloor: good condition, no rust known Please take a look at the photo gallery and videos to get more insights into the vehicle condition. Known deficiencies Battery is about 6 years old, a change is recommended Otherwise, no defects are known Please take a look at the photo gallery and videos to get more insights into the vehicle condition. Executive summary For sale is a very well-kept Mercedes-Benz 500 SEC (C126) from 1991 in the classic colour combination grey with black leather finish. The vehicle is in second hand and has always been family-owned. The history is documented, including checkbook and regular services – most recently in November 2025. The car is equipped with H-mark and approved. Visually and technically, the 500 SEC presents itself in a very well maintained condition. It is a coherent vehicle with extensive documented investments, and a current valuation of € 22,000 is also available. An all-round stylish classic for connoisseurs of the Mercedes upper class.