Mercedes-Benz Clase S W126 Pullman 4-door (1979-1991)
The Mercedes-Benz S-Class, formerly known as Sonderklasse (German for “special class”, abbreviated as “S-Klasse”), is a series of full-sized luxury sedans, limousines and armored sedans produced by the German automaker Mercedes-Benz. The S-Class is the designation for top-of-the-line Mercedes-Benz models and was officially introduced in 1972 with the W116, and has remained in use ever since. The S-Class is the flagship vehicle for Mercedes-Benz.
Second generation (W126/C126; 1979)
The W126 series premiered in September 1979, launching in March 1980 as a 1980 model and late 1980 as a 1981 model in the US and Australia replacing the W116 line. The W126 line featured improved aerodynamics and enlarged aluminum engine blocks. In Australia in 1981, the W126 S-Class won Wheels magazine’s Car of the Year award. The W126 was manufactured from 1979 through 1991 with a mid-cycle update. Coupé models based on the S-Class were reintroduced with the W126 (380/500 SEC). Total sales of the W126 S-Class sedans reached 818,036 units, with an additional 74,060 coupes sold.
In December 1980, the W126 introduced a driver side airbag, as patented by Mercedes-Benz in 1971, as well as passenger side airbags (in 1988), seat-belt pretensioners, and traction control. It was the first production car to feature an airbag standard, and as late as 1991 there were only a few other manufacturers in Europe who offered an airbag. The interior featured additional courtesy and reading lamps, along with heated seats and a more advanced climate control system. A four-speed automatic transmission was standard.
Although the top of range Mercedes-Benz 450SEL 6.9 of the previous generation was not directly replaced, the W126 carried forward the hydropneumatic suspension of the 6.9 as an option on the 500SEL. A new cruise control system was offered as well. Succeeding the roadster based coupes, the W126 introduced a two-door variant, the SEC coupé. The W126 S-Class received a mid-cycle update in 1985 that included both exterior modifications and engine upgrades.
The power plants on the W126 S-Class included straight-6 and V8 engines. Most sales came from the diesel model in Europe[citation needed] and straight-six models in the United States, although the V8 models were praised by contemporary journalists.[citation needed] The US initially received only the smaller of the two V8 engines, the 3.8 liter, which turned out to be a disaster, both due to timing chain repair issues, and to being severely underpowered, with 0-60 mph (97 km/h) acceleration in a leisurely 11 seconds and a modest top speed of 117 mph (188 km/h).
The 5.0 liter engine was far more capable, with 0-60 mph (97 km/h) acceleration in 7.3 seconds and a top speed of 138 mph (222 km/h).
During the W126 mid-cycle update in 1986, both the straight-6 and V8 engines were upgraded in several models to different displacement levels (six-cylinder upgraded from 2.8 L to 3.0 L, eight-cylinder upgraded from 3.8 L to 4.2 L, and 5.0 L to 5.6 L).
