6. Mercedes-Benz W123
The Mercedes-Benz W123 is widely regarded as one of the most durable vehicles ever built. Its robust diesel engines and meticulous German engineering have allowed many of these classic sedans and wagons to remain in daily service for decades.
Stories abound of W123s approaching—or even surpassing—the million-mile mark, a feat that stems from their overbuilt components and straightforward mechanics. For those seeking a truly timeless workhorse, the W123 remains an enduring symbol of automotive longevity.
Hagerty