The Mercedes-Benz W126 S-Class is often hailed as one of the finest luxury cars ever produced, and for good reason. Striking a perfect balance between modern driving dynamics and classic engineering robustness, these vehicles offer an experience that is both engaging and reassuring. For enthusiasts and experts alike, the W126 represents a pinnacle of automotive design, a car built with such meticulous logic and robust construction that even those with limited mechanical expertise can appreciate and maintain them. Among the variants, the 500 Sel Mercedes stands out as a particularly desirable model, embodying the luxury and performance that defined the S-Class.
Front view of a 1985 Mercedes-Benz 500 SEL in Cabernet Red, showcasing its classic design.
Why the W126 500 SEL Remains a Timeless Classic
The 500 SEL Mercedes, particularly in its 1985 iteration, captures the essence of what makes the W126 series so revered. Its design philosophy prioritized both aerodynamic efficiency and stately presence, resulting in a car that is as elegant as it is functional. While US-market models faced certain modifications to comply with regulations, the core engineering brilliance of the 500 SEL Mercedes remained undiminished.
One of the key discussions among enthusiasts often revolves around the variations between US and European specification models. For the US market, the 500 SEL Mercedes was adapted to meet Department of Transportation (DOT) and Environmental Protection Agency (EPA) standards. This resulted in increased weight and slightly reduced horsepower compared to its European counterparts. Specifically, the US-spec 5.0-liter M117 V8 engine in the 500 SEL Mercedes delivered around 184 horsepower.
Side profile of a 1985 Mercedes-Benz 500 SEL highlighting its elegant lines and US-spec headlights.
Despite the slightly detuned engine for the US market, the 500 SEL Mercedes still provided ample performance for its time. With 247 lb/ft of torque, acceleration was more than adequate, achieving 0-60 mph in the low to mid-8 second range and reaching a top speed exceeding 134 mph. However, for those seeking even greater performance, the Euro-spec 5.0-liter and the later 5.6-liter M117 engines offered quicker 0-60 times (6.5-7.2 seconds) and higher top speeds approaching 150 mph. Regardless of specification, the 500 SEL Mercedes provides a supremely comfortable and capable cruising experience.
Spotlight on a Featured 1985 500 SEL and Potential Upgrades
Focusing on a specific 1985 500 SEL Mercedes model, certain aspects warrant attention for those considering ownership or restoration. One common point of contention for enthusiasts is the US-specification headlights. Many argue that these sealed-beam units detract from the sleek, aerodynamic design of the W126, resembling “small billboards” on the front end. Upgrading to Euro-spec headlights is a popular modification, typically requiring a budget of around $500 for parts and DIY installation.
Close-up of the US-spec headlights on a 1985 Mercedes-Benz 500 SEL, an element often upgraded by enthusiasts.
Another area for potential improvement is the wheel size. The original 14-inch wheels of the 500 SEL Mercedes, while period-correct, are considered undersized by modern standards, and tire availability in this size can be limited. Upgrading to 15 or 16-inch wheels not only enhances the car’s stance but also broadens tire choices and can improve handling. OEM-style 15-inch “bundt” alloy wheels are a favored choice among purists, while 16-inch 8-hole style wheels offer a more contemporary look and are readily available. These upgrades can range from approximately $450 for aftermarket sets to $800-$1200 for original “bundt” alloys. While European bumpers offer a sleeker profile compared to the larger US-spec bumpers, this modification is often deemed less essential due to the increased complexity and cost involved.
Interior Luxury and the Rare Four-Place Seating Option
The 1985 model year marked the introduction of standard driver’s airbags and anti-lock brakes for the 500 SEL Mercedes, enhancing its safety features. Inside, the cabin of a well-preserved 500 SEL Mercedes, such as the featured example, showcases the enduring quality of Mercedes-Benz craftsmanship. Burled walnut wood trim, often in excellent condition even decades later, complements the rich leather upholstery and creates an atmosphere of understated luxury. Black dashboards and steering wheels are a particularly sought-after aesthetic detail among enthusiasts.
Interior view of a 1985 Mercedes-Benz 500 SEL with burled walnut wood trim and black dashboard, emphasizing the classic luxury.
The featured 500 SEL Mercedes boasts a particularly rare and desirable option: four-place seating. This “executive” package replaces the standard rear bench seat with two individual, heated, and reclining seats, eliminating the center seating position. This configuration prioritized rear passenger comfort and provided a unique level of exclusivity. The front seats in this configuration are often the more sculpted “sport seats,” offering enhanced bolstering compared to the standard, more relaxed seats found in typical W126 sedans. These sport seats were standard in the SEC coupes and offer a more supportive driving experience.
Rear ‘four-place seating’ option in a 1985 Mercedes-Benz 500 SEL, a rare and desirable feature for executive comfort.
The rarity of the four-place seating option in a 500 SEL Mercedes elevates its appeal for collectors and enthusiasts who appreciate unique and uncommon features. While velour upholstery was another ultra-rare option, buffalo leather, a suede-like material reserved for the most exclusive sedans, represented the pinnacle of luxury interiors for models like this and the BMW 745i.
Detailed view of the individual reclining rear seats in a 1985 Mercedes-Benz 500 SEL with the four-place seating option.
Maintaining Your 500 SEL Mercedes: Tips for Longevity
Owning a 500 SEL Mercedes is not just about appreciating its classic design and luxurious features; it’s also about ensuring its longevity through proper maintenance. These cars are renowned for their robust engineering and can achieve remarkably high mileage with diligent care. Regular oil changes and attention to minor maintenance items are crucial for preserving the reliability of both gasoline and diesel versions of the W126. With proper upkeep, a 500 SEL Mercedes can serve as a dependable daily driver for many years to come. For enthusiasts looking to keep their classic 500 SEL Mercedes in pristine condition, professional car detailing services specializing in vintage vehicles can be invaluable. From paint correction to interior deep cleaning and leather conditioning, expert detailing can help preserve and enhance the beauty and value of these automotive icons, ensuring they remain admired for generations to come.
