This Classic Mercedes Is Getting An Awesome Widebody, V12 Makeover

Renntech is building 12 reengineered Mercedes-Benz SECs. Each one will be built to order and feature the same M120 V12 engine found in the Pagani Zonda and the Mercedes CLK GTR.  

The naturally aspirated 7.5-liter V12 makes 660 horsepower and 650 pound-feet of torque. It pairs with a bespoke manual transaxle. The all-aluminum engine also features equal-length headers. Stopping power comes from carbon-ceramic brakes, which hide behind forged two-piece wheels.

The upgraded engine will coincide with a full frame-up restoration of each Mercedes. The car also features a widebody kit that enhances the SEC’s aerodynamics, cooling, and high-speed stability.  

Mercedes built the SEC from 1979 to 1991, offering the S-Class in sedan and coupe body styles. The automaker offered several engines over its lifetime, including inline-five, inline-six, and V8 engines, but never with a V12. An S-Class with more than eight cylinders wouldn’t arrive until the third-generation W140.  

Renntech says that it will deliver the first SEC 12 Widebody in December 2027.