VI. Standing the Test of Time
The W140’s legend was not made on launch night. It was made afterward, through years of ownership, long mileage, and the accumulated testimony of people who discovered that the car’s density was not theater. It was substance.
The first impression rarely concerns horsepower or options. It is the door weight, the motion of the glass, the exact resistance of the controls, and the density of the air once the cabin seals itself. The W140 feels less like a car than like a volume that has been shut.
The old panic about size now looks faintly absurd. What was once denounced as colossal sits far closer to an ordinary modern executive car than memory admits. The current S-Class, and certainly the Maybach, have moved beyond it outright. The W140 was not too large. It was simply early.
More important, Mercedes really did build it to last. High-mileage W140s are common. Healthy M119 V8s and M120 V12s still feel understressed decades later. The bodies resist corrosion with a seriousness that later Mercedes products could not always match. Plenty of these cars spent years as embassy transport, limousines, or daily workhorses and are still with us. That is not nostalgia. It is evidence.
The flaws are real, and the most infamous is the biodegradable engine wiring harness fitted to many 1990s cars. Mercedes pursued environmentally friendlier insulation, only to discover that heat and time turned good intentions into cracked insulation, short circuits, and expensive diagnosis. By now, many cars have been repaired properly. The ones that have not can become electrical crime scenes.
Other weak points are exactly what you would expect from a flagship this involved: failing soft-close systems, leaking evaporators buried deep in the dash, hydraulic suspension components that demand actual maintenance, and V12 ancillaries that punish indifference. None of this is mysterious. All of it is expensive when ignored.
That reality created a long period in which the W140 was tragically underpriced. People bought them as cheap old luxury cars and then learned, usually at the worst possible moment, that a depreciated flagship still carries flagship repair logic. The market was full of abandoned bargains and false economies. Owners who maintained them properly discovered something else: very little new metal feels this complete.
Values have begun to reflect that. The best late S600s and CL600s are no longer treated as disposable curiosities, while the rare AMG and state-commissioned derivatives have slipped almost entirely outside normal market logic. The gap between an average W140 and an exceptional one continues to widen, which is exactly what should happen.
Owning a W140 now is a deliberate act. It requires knowledge, resources, and standards. It is not a car to buy casually and certainly not one to flip casually. In return, it offers one of the last truly tactile expressions of old Mercedes thinking, analog in feel even when electronically sophisticated.
The old Patek line about stewardship fits the W140 better than most cars. These machines make more sense once you stop thinking of them as consumables.
Time has also clarified the design. What once looked excessive now looks straightforward. Compared with the W126, which can feel almost delicate in its hardware and scale, the W140 trades elegance for authority and gets away with it. Compared with what followed, it remains admirably free of digital clutter and interface gimmickry.
It substitutes mechanical substance for novelty. That is why it still feels current in use. Later S-Classes date themselves with screens, interfaces, and cost-cut details. The W140 simply continues being what it was built to be.
That is the W140’s legacy. Not that it was perfect, but that it was definitive.
-eᴍ