About the W126
 
The W126 Mercedes-Benz S-Class was produced from 1979 to 1991, and the 1991 Mercedes-Benz S-Class 420SEL was one of the final iterations of this model. As the flagship vehicle of the Mercedes-Benz lineup, the S-Class was designed to be a luxurious and technologically advanced sedan, and the 420SEL was no exception.
 
The 1991 Mercedes-Benz S-Class 420SEL was powered by a 4.2-liter V8 engine that produced 201 horsepower and 228 lb-ft of torque. It was paired with a four-speed automatic transmission and rear-wheel drive. The 420SEL could accelerate from 0 to 60 mph in 8.6 seconds, and had a top speed of 130 mph.
The exterior of the 420SEL featured a classic and timeless design, with clean lines and smooth curves. The body was constructed of high-strength steel, and the car had a length of 201.4 inches, a width of 72.0 inches, and a height of 56.3 inches. The 420SEL also featured a sunroof, fog lamps, and 15-inch alloy wheels.
 
The interior of the 420SEL was luxurious and spacious, with seating for up to five passengers. The front seats were power-adjustable, and the rear seats could recline for additional comfort. The interior was upholstered in leather, and featured wood trim on the dashboard, center console, and door panels. Other interior features included power windows, power locks, power mirrors, and automatic climate control.
The 420SEL was also equipped with advanced safety features, including anti-lock brakes, traction control, and airbags for the driver and front passenger. Additionally, the car featured a reinforced passenger compartment, crumple zones, and a fire extinguisher in the trunk.
 
The 1991 Mercedes-Benz S-Class 420SEL was a luxurious and well-built sedan that was known for its exceptional quality, durability, and reliability. It was a popular choice among affluent buyers who wanted a spacious and comfortable car that was also technologically advanced and safe. Today, the 420SEL is considered a classic Mercedes-Benz and is still sought after by enthusiasts and collectors.