In the world of classic cars, the Mercedes-Benz S-Class W140 has long been regarded as one of the defining luxury models of the 1990s.

At the top of the range was the S600, powered by a 6.0-liter V12 engine and developed by Mercedes-Benz with an array of sophisticated technologies and premium equipment.

The S600 W140 was not a limited-production special edition, but it remains relatively rare because the flagship V12 version was produced in considerably smaller numbers than its six-cylinder and V8 counterparts.

Around three decades later, well-preserved examples are becoming increasingly difficult to find, particularly those that remain largely in their original condition.

In Vietnam, the W140 has been known among car enthusiasts for many years. However, S600 V12 models that retain their original configuration, without aftermarket wheels, replacement interiors, engine modifications or modern-style upgrades, are relatively rare.

That scarcity is one reason such cars are attracting growing interest from classic-car collectors.

One example is a 1995 Mercedes-Benz S600 W140 owned by Tan Th. in Nha Trang, Khanh Hoa. He has spent many years pursuing his passion for collecting classic automobiles.

What stands out most about this particular S600 is its originality.

Rather than making major cosmetic or mechanical changes, the owner simply had the car professionally detailed and refreshed inside and out, bringing the sedan’s appearance closer to how it looked when it left the factory.

The W140’s unmistakably angular lines remain clearly visible, from its long hood and large grille to its rectangular headlights and pronounced character lines running along the body.

Unlike many modern Mercedes-Benz models, the W140 was not designed around soft, flowing curves. Instead, it has a substantial, imposing and distinctly boxy presence.

That unmistakable shape is precisely part of what continues to make the W140 appealing to classic-car enthusiasts.

At the front, the three-pointed star remains mounted on the hood, accompanied by the chrome grille and large headlight assemblies.

The body trim, door handles, windows and numerous other exterior components also retain their original styling.

The multi-spoke wheels have been cleaned and polished, complementing the bodywork and restoring the stately appearance expected of a flagship S-Class from the 1990s.

The car’s greatest attraction, however, lies beneath the hood.

The 1995 S600 W140 is powered by Mercedes-Benz’s 6.0-liter M120 V12 engine, producing around 394 horsepower and approximately 570Nm of peak torque.

At the time, this powertrain made the S600 one of the most luxurious and powerful sedans on the market.

The V12 delivered not only substantial power but was also renowned for its smooth operation. For an S-Class, that mattered: Mercedes-Benz sought to provide strong yet seamless acceleration rather than an excessively sporty driving experience.

The S600 W140 can accelerate from 0-100km/h in around 6.6 seconds, while its top speed is electronically limited to 250km/h.

Those figures show that even more than three decades later, the flagship luxury sedan still boasts impressive performance.

Inside, the W140 was once considered a benchmark for luxury automobiles.

It became known for its spacious cabin, premium materials, excellent sound insulation and a long list of features that were far from commonplace in cars during the 1990s.

Equipment such as soft-close doors, double-glazed windows, climate control, electrically adjustable seats, leather upholstery, wood trim and numerous convenience features helped establish the S600 as a car built for the elite.

Following its refurbishment, the interior of Tan’s car has regained a clean and luxurious appearance.

More importantly, the owner has resisted replacing its original equipment with modern technology that could compromise the W140’s period character.

From a collector’s perspective, that is also one of this S600’s greatest strengths.

The more original a classic car remains, the greater its historical value can be. Restoring deteriorated components while keeping modifications to a minimum allows the car to retain the character that defined it when new.

Owning an S600 W140, however, also means accepting several drawbacks.

Its 6.0-liter V12 is mechanically complex, expensive to maintain and consumes considerable amounts of fuel.

After more than 30 years, rubber components, seals, electrical systems, suspension parts and various convenience features can also deteriorate with age.

Finding the correct replacement parts for a classic such as the W140 is not always straightforward either.

For that reason, this is hardly the ideal choice for someone simply looking for an inexpensive used car for everyday transportation.

The imposing, angular design remains one of the defining characteristics of the Mercedes-Benz W140.

The 1995 S600 W140 is powered by a 6.0-liter M120 V12 engine producing around 394 horsepower and 570Nm of torque.

The W140 cabin was once considered a benchmark for luxury, with leather upholstery, wood trim and an array of premium features.