Background
Notable as the first coupé derived from the luxurious S-Class, the Mercedes-Benz C126 380 and 500 SEC were unveiled to the public at the IAA Frankfurt in 1981, marking the introduction of a new line of powerful, yet luxurious V8-powered coupés into the Mercedes-Benz range.
With either a 3.8 or 5.0-litre naturally aspirated engine up front, these SEC’s were excellent long-distance cruising cars, ideally suited to the impressive Autobahn networks of Germany.
As a whole, the W126 and C126 family of cars were noted for their safety, and - in the case of the coupés - their gorgeous pillar-less design. All cars utilised high-strength, low-alloy (HSLA) sheet in their construction, the 500 SEL And SEC featured ABS from the get go, seatbelt pre-tensioners featured on the whole range, TCS was available as an option on European cars from 1989, and crumple zones were worked in to the design of the car.
With a mid-life refresh (often referred to as the “second series”) taking place in 1986, the range was revised to include new engines, with the 5.0-litre V8 being the only engine carried over from the initial model. Most notably, catalytic converters were now offered as an option in Europe for the first time, with all models featuring catalysts from 1990 onward, making these earlier cars a firm favourite for enthusiasts.







