![1990 Mercedes-Benz 420 SEC C126 (Automatic / 4 Gears) RWD [1985-1991]](https://i0.wp.com/i0.wp.com/autogalactic.al/wp-content/uploads/2026/01/abc-20059471-40-medium.jpg?fit=1000%2C666&ssl=1&resize=360,270)
The 1990 Mercedes-Benz 420 SEC represents the most mature and refined stage of the C126 (Phase-II) series, combining modern emissions technology with the timeless elegance of a hardtop cup. This model is powered by a 4.2-liter V8 engine (M116) equipped with the Bosch KE-Jetronic system and a 3-way catalyst, which produces 224 hp . As part of the second series, the 420-sec took advantage of aesthetic improvements like smoother side panels (Sacco boards) and 15-inch wheels, while maintaining the iconic no-mid-pillar profile. With an improved aerodynamic coefficient of 0.35 and a highly accurate automatic gearbox, this vehicle offers the perfect balance between dynamic performance and the royal luxury that only an S-Class Coupe can offer.