4. Mercedes-Benz W123
The Mercedes-Benz W123 is often cited as the gold standard of mechanical resilience in luxury motoring. Praised by Classic & Sports Car Magazine, these sedans and wagons have clocked up millions of miles as taxis across continents, especially in Africa and Europe. Their overbuilt engines and straightforward mechanics make them easy to keep running for decades. Few vehicles blend luxury and longevity as seamlessly, ensuring the W123’s place on the road—and in history—well into the future.